{"id":26264,"date":"2019-03-19T13:30:50","date_gmt":"2019-03-19T08:00:50","guid":{"rendered":"https:\/\/cracku.in\/blog\/?p=26264"},"modified":"2019-03-19T13:30:50","modified_gmt":"2019-03-19T08:00:50","slug":"mathematical-opeartions-questions-for-rrb-ntpc-pdf","status":"publish","type":"post","link":"https:\/\/cracku.in\/blog\/mathematical-opeartions-questions-for-rrb-ntpc-pdf\/","title":{"rendered":"Mathematical Opeartions Questions For RRB NTPC PDF"},"content":{"rendered":"<h1><span style=\"font-size: 18pt;\"><strong><span style=\"text-decoration: underline;\">Mathematical Opeartions Questions For RRB <\/span><span style=\"text-decoration: underline;\">NTPC PDF<\/span><\/strong><\/span><\/h1>\n<p>Download RRB NTPC Mathematical Operations\u00a0 Questions and Answers PDF. Top 25 RRB NTPC\u00a0 Maths\u00a0 questions based on asked questions in previous exam papers very important for the Railway NTPC exam.<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/downloads\/3713\" target=\"_blank\" class=\"btn btn-danger  download\">Download Mathematical Opeartions Questions &#8211; RRB NTPC PDF<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/pay\/5oeW1\" target=\"_blank\" class=\"btn btn-info \">20 RRB NTPC Mocks &#8211; Just Rs. 149<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/railways-ntpc-previous-papers\" target=\"_blank\" class=\"btn btn-primary \">RRB NTPC Previous Papers [Download PDF]<\/a><\/p>\n<p><a href=\"https:\/\/cracku.in\/pay\/5sUuA\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-25703 size-full\" src=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png\" alt=\"RRB NTPC Mock Test\" width=\"728\" height=\"90\" srcset=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png 728w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-300x37.png 300w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-30x4.png 30w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-696x86.png 696w\" sizes=\"auto, (max-width: 728px) 100vw, 728px\" \/><\/a><\/p>\n<p><b>Question 1:\u00a0<\/b>If \u2018+\u2019 means \u2018-\u2019, \u2018-\u2019 means \u2018*\u2019, \u2018*\u2019 means \u2018\/\u2019 and \u2018\/\u2019 means \u2018+\u2019, then what is the value of the following expression?<br \/>\n13 &#8211; 13 \/ 3 &#8211; 63 * 9 + 2 -5<\/p>\n<p>a)\u00a0170<\/p>\n<p>b)\u00a0180<\/p>\n<p>c)\u00a0190<\/p>\n<p>d)\u00a0200<\/p>\n<p><b>Question 2:\u00a0<\/b>If \u2018+\u2019 means \u2018*\u2019, \u2018-\u2019 means \u2018+\u2019, \u2018*\u2019 means \u2018\/\u2019 and \u2018\/\u2019 means \u2018-\u2019, then what is the value of the following expression?<br \/>\n119*17 + 6 \/ 16 * 2 + 5<\/p>\n<p>a)\u00a01<\/p>\n<p>b)\u00a03<\/p>\n<p>c)\u00a02<\/p>\n<p>d)\u00a04<\/p>\n<p><b>Question 3:\u00a0<\/b>$\\sqrt{0.07+\\sqrt{0.0967-0.0643}}$ = ?<\/p>\n<p>a)\u00a00.8<\/p>\n<p>b)\u00a00.7<\/p>\n<p>c)\u00a00.6<\/p>\n<p>d)\u00a00.5<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/www.youtube.com\/channel\/UCMDJPaiDdRPv2mrEJoLfklA?sub_confirmation=1\" target=\"_blank\" class=\"btn btn-warning \">FREE RRB NTPC YOUTUBE VIDEOS<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/rrb-ntpc-mock-test\" target=\"_blank\" class=\"btn btn-danger \">RRB NTPC Free Mock Test<\/a><\/p>\n<p><a href=\"https:\/\/cracku.in\/pay\/5sUuA\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-25703 size-full\" src=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png\" alt=\"RRB NTPC Mock Test\" width=\"728\" height=\"90\" srcset=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png 728w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-300x37.png 300w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-30x4.png 30w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-696x86.png 696w\" sizes=\"auto, (max-width: 728px) 100vw, 728px\" \/><\/a><\/p>\n<p><b>Question 4:\u00a0<\/b>Find $x^{2018}$, if $3x-4.5+2.4 = &#8211; 2.1$<\/p>\n<p>a)\u00a00<\/p>\n<p>b)\u00a01<\/p>\n<p>c)\u00a0$7^{2018}$<\/p>\n<p>d)\u00a0$0.7^{2018}$<\/p>\n<p><b>Question 5:\u00a0<\/b>2.1221-3.1331+4.1441 = ?<\/p>\n<p>a)\u00a09.3993<\/p>\n<p>b)\u00a03.1331<\/p>\n<p>c)\u00a06.2662<\/p>\n<p>d)\u00a0none of these<\/p>\n<p><b>Question 6:\u00a0<\/b>$\\frac{5}{10}\\times \\frac{100}{125} \\times \\frac{25}{x} = 1$, find $x$ ?<\/p>\n<p>a)\u00a020<\/p>\n<p>b)\u00a015<\/p>\n<p>c)\u00a05<\/p>\n<p>d)\u00a010<\/p>\n<p><b>Question 7:\u00a0<\/b>$\\sqrt{0.9-\\sqrt{0.0234-0.0153}}$ = ?<\/p>\n<p>a)\u00a00.9<\/p>\n<p>b)\u00a00.99<\/p>\n<p>c)\u00a00.999<\/p>\n<p>d)\u00a09.0<\/p>\n<p><b>Question 8:\u00a0<\/b>$\\frac{3}{4}\\times \\frac{16}{27} \\div \\frac{2}{3} = ?$<\/p>\n<p>a)\u00a02\/3<\/p>\n<p>b)\u00a03\/2<\/p>\n<p>c)\u00a09\/4<\/p>\n<p>d)\u00a04\/9<\/p>\n<p><b>Question 9:\u00a0<\/b>0.1123-0.0012+1.0032 &#8211; 0.101 = ?<\/p>\n<p>a)\u00a01.0033<\/p>\n<p>b)\u00a01.1333<\/p>\n<p>c)\u00a01.0133<\/p>\n<p>d)\u00a01.1033<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/railways-ntpc-previous-papers\" target=\"_blank\" class=\"btn btn-alone \">RRB NTPC Previous Papers Download PDF<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/rrb-je-previous-papers\" target=\"_blank\" class=\"btn btn-primary \">RRB JE PREVIOUS PAPERS DOWNLOAD<\/a><\/p>\n<p><a href=\"https:\/\/cracku.in\/pay\/5sUuA\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-25703 size-full\" src=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png\" alt=\"RRB NTPC Mock Test\" width=\"728\" height=\"90\" srcset=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png 728w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-300x37.png 300w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-30x4.png 30w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-696x86.png 696w\" sizes=\"auto, (max-width: 728px) 100vw, 728px\" \/><\/a><\/p>\n<p><b>Question 10:\u00a0<\/b>Find x, if 4x-0.3+0.22 = 2 ?<\/p>\n<p>a)\u00a05.002<\/p>\n<p>b)\u00a05.200<\/p>\n<p>c)\u00a05.020<\/p>\n<p>d)\u00a00.520<\/p>\n<p><b>Question 11:\u00a0<\/b>$15\\div 3 + 2 \\times 4 &#8211; 2 = x + 1$, find $x$ ?<\/p>\n<p>a)\u00a09<\/p>\n<p>b)\u00a010<\/p>\n<p>c)\u00a011<\/p>\n<p>d)\u00a012<\/p>\n<p><b>Question 12:\u00a0<\/b>$\\frac{6}{8}\\times \\frac{16}{18} \\times \\frac{3}{4} \\times X = \\frac{4}{7}$, find $1\/X$ ?<\/p>\n<p>a)\u00a04\/7<\/p>\n<p>b)\u00a08\/7<\/p>\n<p>c)\u00a07\/8<\/p>\n<p>d)\u00a07\/4<\/p>\n<p><b>Question 13:\u00a0<\/b>576.78+456.87-x = 658.65, Find x ?<\/p>\n<p>a)\u00a0375<\/p>\n<p>b)\u00a0376<\/p>\n<p>c)\u00a0373<\/p>\n<p>d)\u00a0374<\/p>\n<p><b>Question 14:\u00a0<\/b>Find $((4096)^{1\/3})^{1\/2}=?$<\/p>\n<p>a)\u00a02<\/p>\n<p>b)\u00a03<\/p>\n<p>c)\u00a04<\/p>\n<p>d)\u00a05<\/p>\n<p><b>Question 15:\u00a0<\/b>3234 + 5678 &#8211; 11223 + 4456 = ?<\/p>\n<p>a)\u00a04585<\/p>\n<p>b)\u00a03545<\/p>\n<p>c)\u00a05645<\/p>\n<p>d)\u00a02145<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/blog\/general-knowledge-questions-and-answers-for-competitive-exams-pdf\/\" target=\"_blank\" class=\"btn btn-alone \">18000+ Questions &#8211; Free SSC Study Material<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/blog\/general-science-questions-answers-competitive-exams-pdf-mcq-quiz\/\" target=\"_blank\" class=\"btn btn-info \">Download General Science Notes PDF<\/a><\/p>\n<p><b>Question 16:\u00a0<\/b>Find $[((16)^{\\frac{1}{4}})^{\\frac{2}{3}}]^{\\frac{6}{2}}$ = ?<\/p>\n<p>a)\u00a0256<\/p>\n<p>b)\u00a064<\/p>\n<p>c)\u00a016<\/p>\n<p>d)\u00a04<\/p>\n<p><b>Question 17:\u00a0<\/b>123.45+45.678-3.1345+13.234 = ?<\/p>\n<p>a)\u00a0146.3455<\/p>\n<p>b)\u00a0169.2275<\/p>\n<p>c)\u00a0156.3455<\/p>\n<p>d)\u00a0179.2275<\/p>\n<p><b>Question 18:\u00a0<\/b>45.23+23.17-12.46+34.67 = ?<\/p>\n<p>a)\u00a047.86<\/p>\n<p>b)\u00a056.64<\/p>\n<p>c)\u00a067.57<\/p>\n<p>d)\u00a090.61<\/p>\n<p><b>Question 19:\u00a0<\/b>$95^2-5^2=?$<\/p>\n<p>a)\u00a08100<\/p>\n<p>b)\u00a09000<\/p>\n<p>c)\u00a09025<\/p>\n<p>d)\u00a09205<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/rrb-ntpc-mock-test\" target=\"_blank\" class=\"btn btn-primary \">RRB NTPC Free Mock Test<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/rrb-je-mock-test\" target=\"_blank\" class=\"btn btn-info \">RRB JE Free Mock Test<\/a><\/p>\n<p><a href=\"https:\/\/cracku.in\/pay\/5sUuA\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-25703 size-full\" src=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png\" alt=\"RRB NTPC Mock Test\" width=\"728\" height=\"90\" srcset=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png 728w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-300x37.png 300w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-30x4.png 30w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-696x86.png 696w\" sizes=\"auto, (max-width: 728px) 100vw, 728px\" \/><\/a><\/p>\n<p><b>Question 20:\u00a0<\/b>Which of the following is divisible by 3, 7, 9 and 11 ?<\/p>\n<p>a)\u00a02645<\/p>\n<p>b)\u00a04158<\/p>\n<p>c)\u00a03791<\/p>\n<p>d)\u00a01188<\/p>\n<p><b>Question 21:\u00a0<\/b>3245 &#8211; 123 &#8211; 456 &#8211; 347 + x = 3650 ?<\/p>\n<p>a)\u00a02134<\/p>\n<p>b)\u00a01331<\/p>\n<p>c)\u00a01567<\/p>\n<p>d)\u00a01467<\/p>\n<p><b>Question 22:\u00a0<\/b>$600\\div 12 \\times \\frac{1}{2} \\div 5 = ?$<\/p>\n<p>a)\u00a04<\/p>\n<p>b)\u00a05<\/p>\n<p>c)\u00a06<\/p>\n<p>d)\u00a08<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/rrb-online-test\" target=\"_blank\" class=\"btn btn-primary \"> Daily Free RRB Online Tests for RRB Exams<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/free-gk-tests\" target=\"_blank\" class=\"btn btn-info \">100+ Free Online G.K Tests<\/a><\/p>\n<p><b>Question 23:\u00a0<\/b>123.45 + 6789.01 &#8211; 2345.67 = ?<\/p>\n<p>a)\u00a04565.79<\/p>\n<p>b)\u00a04655.79<\/p>\n<p>c)\u00a04566.79<\/p>\n<p>d)\u00a04665.79<\/p>\n<p><b>Question 24:\u00a0<\/b>4591.15 &#8211; 528.116 = x + 456.123. Find x ?<\/p>\n<p>a)\u00a03660.911<\/p>\n<p>b)\u00a03666.911<\/p>\n<p>c)\u00a03006.911<\/p>\n<p>d)\u00a03606.911<\/p>\n<p><b>Question 25:\u00a0<\/b>987.65-456.78-43.321 = ?<\/p>\n<p>a)\u00a0478.549<\/p>\n<p>b)\u00a0487.549<\/p>\n<p>c)\u00a0487.459<\/p>\n<p>d)\u00a0478.459<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/rrb-ntpc-mock-test\" target=\"_blank\" class=\"btn btn-info \">Free RRB Daily Practice Set<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/rrb-je-previous-papers\" target=\"_blank\" class=\"btn btn-warning \">Download Current Affairs Questions &amp; Answers PDF<\/a><\/p>\n<p><a href=\"https:\/\/cracku.in\/pay\/5sUuA\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-25703 size-full\" src=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png\" alt=\"RRB NTPC Mock Test\" width=\"728\" height=\"90\" srcset=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png 728w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-300x37.png 300w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-30x4.png 30w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-696x86.png 696w\" sizes=\"auto, (max-width: 728px) 100vw, 728px\" \/><\/a><\/p>\n<p><span style=\"text-decoration: underline;\"><strong>Answers &amp; Solutions:<\/strong><\/span><\/p>\n<p><strong>1)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p>Let us replace the symbols with the actual operators.<\/p>\n<p>13 &#8211; 13 \/ 3 &#8211; 63 * 9 + 2 -5 = 13 * 13 + 3*63\/9 &#8211; 2*5<\/p>\n<p>Applying BODMAS rule, we get, 169 + 3*7 &#8211; 10 = 180<br \/>\nTherefore, option B is the right answer.<\/p>\n<p><strong>2)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>Let us replace the symbols with the actual operators.<\/p>\n<p>119*17 + 6 \/ 16 * 2 + 5 = 119\/17 * 6 &#8211; 16\/2 *5<\/p>\n<p>Applying BODMAS rule, we get,<\/p>\n<p>119\/17 * 6 &#8211; 16\/2 *5 = 7*6 &#8211; 8*5<br \/>\n= 42 &#8211; 40<br \/>\n= 2<\/p>\n<p>Therefore, option C is the right answer.<\/p>\n<p><strong>3)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p>$\\sqrt{0.07+\\sqrt{0.0967-0.0643}}$ =\u00a0$\\sqrt{0.07+\\sqrt{0.0324}}$ =\u00a0$\\sqrt{0.07+0.18}$ =\u00a0$\\sqrt{0.25}$ =\u00a0$0.5$<\/p>\n<p>So the answer is option D.<\/p>\n<p><strong>4)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p>$3x-4.5+2.4 = &#8211; 2.1$<\/p>\n<p>$3x-2.1 = &#8211; 2.1$<\/p>\n<p>$3x = 0$<\/p>\n<p>$x = 0$<\/p>\n<p>$x^{2018} = 0$<\/p>\n<p>So the answer is option A.<\/p>\n<p><strong>5)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p>2.1221-3.1331+4.1441 = -1.0110+4.1441 = 3.1331<\/p>\n<p>So the answer is option B.<\/p>\n<p><strong>6)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p>$\\frac{5}{10}\\times \\frac{100}{125} \\times \\frac{25}{x} = 1$<\/p>\n<p>$\\frac{10}{25} \\times \\frac{25}{x} = 1$<\/p>\n<p>$\\frac{10}{x} = 1$<\/p>\n<p>$x = 10$<\/p>\n<p>So the answer is option D.<\/p>\n<p><strong>7)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p>$\\sqrt{0.9-\\sqrt{0.0234-0.0153}}$ =\u00a0$\\sqrt{0.9-\\sqrt{0.0081}}$ =\u00a0$\\sqrt{0.9-0.09}$ =\u00a0$\\sqrt{0.81}$ = $0.9$<\/p>\n<p>So the answer is option A.<\/p>\n<p><strong>8)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p>$\\frac{3}{4}\\times \\frac{16}{27} \\div \\frac{2}{3}$ =\u00a0$\\frac{3}{4}\\times \\frac{16}{27} \\times \\frac{3}{2}$ = $\\frac{4}{9} \\times \\frac{3}{2} = \\frac{2}{3}$<\/p>\n<p>So the answer is option A.<\/p>\n<p><a href=\"https:\/\/cracku.in\/pay\/5sUuA\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-25703 size-full\" src=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png\" alt=\"RRB NTPC Mock Test\" width=\"728\" height=\"90\" srcset=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png 728w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-300x37.png 300w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-30x4.png 30w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-696x86.png 696w\" sizes=\"auto, (max-width: 728px) 100vw, 728px\" \/><\/a><\/p>\n<p><strong>9)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>0.1123-0.0012+1.0032 &#8211; 0.101 =\u00a0 0.1111 + 0.9022 = 1.0133<\/p>\n<p>So the answer is option C.<\/p>\n<p><strong>10)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p>4x-0.3+0.22 = 2<\/p>\n<p>4x-0.08 = 2<\/p>\n<p>4x = 2.08<\/p>\n<p>x = 0.52<\/p>\n<p>So the answer is option D.<\/p>\n<p><strong>11)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p>$15\\div 3 + 2 \\times 4 &#8211; 2 = x + 1$<\/p>\n<p>$5 +8 &#8211; 2 = x + 1$<\/p>\n<p>$11 = x + 1$<\/p>\n<p>$x = 10$<\/p>\n<p>So the answer is option B.<\/p>\n<p><strong>12)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p>$\\frac{6}{8}\\times \\frac{16}{18} \\times \\frac{3}{4} \\times X = \\frac{4}{7}$<\/p>\n<p>$\\frac{3}{4}\\times \\frac{8}{9} \\times \\frac{3}{4} \\times X = \\frac{4}{7}$<\/p>\n<p>$\\frac{1}{2} \\times X = \\frac{4}{7}$<\/p>\n<p>$X = 8\/7$<\/p>\n<p>$1\/X = 7\/8$<\/p>\n<p>So the answer is option B.<\/p>\n<p><strong>13)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p>576.78+456.87-x = 658.65<\/p>\n<p>1033.65 &#8211; x = 658.65<\/p>\n<p>x = 1033.65 &#8211; 658.65<\/p>\n<p>x = 375<\/p>\n<p>So the answer is option A.<\/p>\n<p><strong>14)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>$((4096)^{1\/3})^{1\/2} = 16^{1\/2} = 4$<\/p>\n<p>So the answer is option C.<\/p>\n<p><strong>15)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p>3234 + 5678 &#8211; 11223 + 4456 = 2145.<\/p>\n<p>So the answer is option D.<\/p>\n<p><strong>16)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p>$[((16)^{\\frac{1}{4}})^{\\frac{2}{3}}]^{\\frac{6}{2}}$ =\u00a0$[16]^{\\frac{1}{4}\\times\\frac{2}{3}\\times\\frac{6}{2}}$ = $[16]^{\\frac{1}{2}}$ = $4$<\/p>\n<p>So the answer is option D.<\/p>\n<p><strong>17)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p>123.45+45.678-3.1345+13.234 = 179.2275<\/p>\n<p>So the answer is option D.<\/p>\n<p><strong>18)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p>45.23+23.17-12.46+34.67 = 90.61<\/p>\n<p>So the answer is option D.<\/p>\n<p><strong>19)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p>$95^2-5^2=(95+5)(95-5) = 100*90 = 9000$<\/p>\n<p>So the answer is option B.<\/p>\n<p><strong>20)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p>3*7*9*11 = 2079<\/p>\n<p>2079*2 = 4158 is divisible by 3, 7, 9, 11<\/p>\n<p>So the answer is option B.<\/p>\n<p><strong>21)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p>3245 &#8211; 123 &#8211; 456 &#8211; 347 + x = 3650<\/p>\n<p>2319 + x = 3650<\/p>\n<p>x = 1331<\/p>\n<p>So the answer is option B.<\/p>\n<p><strong>22)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p>$600\\div 12 \\times \\frac{1}{2} \\div 5 = 50 \\times 1\/10 = 5$<\/p>\n<p>So the answer is option B.<\/p>\n<p><a href=\"https:\/\/cracku.in\/pay\/5sUuA\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-25703 size-full\" src=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png\" alt=\"RRB NTPC Mock Test\" width=\"728\" height=\"90\" srcset=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png 728w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-300x37.png 300w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-30x4.png 30w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-696x86.png 696w\" sizes=\"auto, (max-width: 728px) 100vw, 728px\" \/><\/a><\/p>\n<p><strong>23)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>123.45 + 6789.01 &#8211; 2345.67 =\u00a06912.46 &#8211; 2345.67 = 4566.79<\/p>\n<p>So the answer is option C.<\/p>\n<p><strong>24)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p>4591.15 &#8211; 528.116 = x + 456.123<\/p>\n<p>4063.034 = x + 456.123<\/p>\n<p>4063.034 &#8211; 456.123 = x<\/p>\n<p>3606.911 = x<\/p>\n<p>So the answer is option D.<\/p>\n<p><strong>25)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p>987.65-456.78-43.321 = 530.87 &#8211; 43.321 = 487.549<br \/>\nSo the answer is option B.<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/play.google.com\/store\/apps\/details?id=in.cracku.app&amp;hl=en_US\" target=\"_blank\" class=\"btn btn-danger \">DOWNLOAD APP FOR RRB FREE MOCKS<\/a><\/p>\n<p>We hope this Mathematical Operations\u00a0 questions for RRB NTPC Exam will be highly useful for your preparation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mathematical Opeartions Questions For RRB NTPC PDF Download RRB NTPC Mathematical Operations\u00a0 Questions and Answers PDF. Top 25 RRB NTPC\u00a0 Maths\u00a0 questions based on asked questions in previous exam papers very important for the Railway NTPC exam. Question 1:\u00a0If \u2018+\u2019 means \u2018-\u2019, \u2018-\u2019 means \u2018*\u2019, \u2018*\u2019 means \u2018\/\u2019 and \u2018\/\u2019 means \u2018+\u2019, then what is [&hellip;]<\/p>\n","protected":false},"author":41,"featured_media":26266,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[169,125,31,1603,1601],"tags":[489,491,42,1619],"class_list":{"0":"post-26264","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-downloads","8":"category-featured","9":"category-railways","10":"category-rrb-ntpc","11":"category-rrb-ntpc-je","12":"tag-railway-exam","13":"tag-rrb","14":"tag-rrb-mock-test","15":"tag-rrb-ntpc-2019"},"better_featured_image":{"id":26266,"alt_text":"Mathematical Operations Questions PDF","caption":"Mathematical Operations Questions PDF","description":"Mathematical Operations Questions PDF","media_type":"image","media_details":{"width":1200,"height":630,"file":"2019\/03\/fig-19-03-2019_07-26-44.jpg","sizes":{"thumbnail":{"file":"fig-19-03-2019_07-26-44-150x150.jpg","width":150,"height":150,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/fig-19-03-2019_07-26-44-150x150.jpg"},"medium":{"file":"fig-19-03-2019_07-26-44-300x158.jpg","width":300,"height":158,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/fig-19-03-2019_07-26-44-300x158.jpg"},"medium_large":{"file":"fig-19-03-2019_07-26-44-768x403.jpg","width":768,"height":403,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/fig-19-03-2019_07-26-44-768x403.jpg"},"large":{"file":"fig-19-03-2019_07-26-44-1024x538.jpg","width":1024,"height":538,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/fig-19-03-2019_07-26-44-1024x538.jpg"},"tiny-lazy":{"file":"fig-19-03-2019_07-26-44-30x16.jpg","width":30,"height":16,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/fig-19-03-2019_07-26-44-30x16.jpg"},"td_80x60":{"file":"fig-19-03-2019_07-26-44-80x60.jpg","width":80,"height":60,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/fig-19-03-2019_07-26-44-80x60.jpg"},"td_100x70":{"file":"fig-19-03-2019_07-26-44-100x70.jpg","width":100,"height":70,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/fig-19-03-2019_07-26-44-100x70.jpg"},"td_218x150":{"file":"fig-19-03-2019_07-26-44-218x150.jpg","width":218,"height":150,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/fig-19-03-2019_07-26-44-218x150.jpg"},"td_265x198":{"file":"fig-19-03-2019_07-26-44-265x198.jpg","width":265,"height":198,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/fig-19-03-2019_07-26-44-265x198.jpg"},"td_324x160":{"file":"fig-19-03-2019_07-26-44-324x160.jpg","width":324,"height":160,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/fig-19-03-2019_07-26-44-324x160.jpg"},"td_324x235":{"file":"fig-19-03-2019_07-26-44-324x235.jpg","width":324,"height":235,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/fig-19-03-2019_07-26-44-324x235.jpg"},"td_324x400":{"file":"fig-19-03-2019_07-26-44-324x400.jpg","width":324,"height":400,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/fig-19-03-2019_07-26-44-324x400.jpg"},"td_356x220":{"file":"fig-19-03-2019_07-26-44-356x220.jpg","width":356,"height":220,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/fig-19-03-2019_07-26-44-356x220.jpg"},"td_356x364":{"file":"fig-19-03-2019_07-26-44-356x364.jpg","width":356,"height":364,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/fig-19-03-2019_07-26-44-356x364.jpg"},"td_533x261":{"file":"fig-19-03-2019_07-26-44-533x261.jpg","width":533,"height":261,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/fig-19-03-2019_07-26-44-533x261.jpg"},"td_534x462":{"file":"fig-19-03-2019_07-26-44-534x462.jpg","width":534,"height":462,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/fig-19-03-2019_07-26-44-534x462.jpg"},"td_696x0":{"file":"fig-19-03-2019_07-26-44-696x365.jpg","width":696,"height":365,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/fig-19-03-2019_07-26-44-696x365.jpg"},"td_696x385":{"file":"fig-19-03-2019_07-26-44-696x385.jpg","width":696,"height":385,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/fig-19-03-2019_07-26-44-696x385.jpg"},"td_741x486":{"file":"fig-19-03-2019_07-26-44-741x486.jpg","width":741,"height":486,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/fig-19-03-2019_07-26-44-741x486.jpg"},"td_1068x580":{"file":"fig-19-03-2019_07-26-44-1068x580.jpg","width":1068,"height":580,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/fig-19-03-2019_07-26-44-1068x580.jpg"},"td_1068x0":{"file":"fig-19-03-2019_07-26-44-1068x561.jpg","width":1068,"height":561,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/fig-19-03-2019_07-26-44-1068x561.jpg"},"td_0x420":{"file":"fig-19-03-2019_07-26-44-800x420.jpg","width":800,"height":420,"mime-type":"image\/jpeg","source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/fig-19-03-2019_07-26-44-800x420.jpg"}},"image_meta":{"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0"}},"post":null,"source_url":"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/fig-19-03-2019_07-26-44.jpg"},"yoast_head":"<!-- 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Top 25 RRB NTPC\u00a0 Maths\u00a0 questions based on asked questions in previous exam papers very important for the Railway NTPC exam. Question 1:\u00a0If \u2018+\u2019 means \u2018-\u2019, \u2018-\u2019 means \u2018*\u2019, \u2018*\u2019 means \u2018\/\u2019 and \u2018\/\u2019 means \u2018+\u2019, then what is [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/cracku.in\/blog\/mathematical-opeartions-questions-for-rrb-ntpc-pdf\/\" \/>\n<meta property=\"og:site_name\" content=\"Cracku\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/crackuexam\/\" \/>\n<meta property=\"article:published_time\" content=\"2019-03-19T08:00:50+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/fig-19-03-2019_07-26-44.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"630\" \/>\n<meta name=\"twitter:card\" content=\"summary\" \/>\n<meta name=\"twitter:creator\" content=\"@crackuexam\" \/>\n<meta name=\"twitter:site\" content=\"@crackuexam\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Organization\",\"@id\":\"https:\/\/cracku.in\/blog\/#organization\",\"name\":\"Cracku\",\"url\":\"https:\/\/cracku.in\/blog\/\",\"sameAs\":[\"https:\/\/www.facebook.com\/crackuexam\/\",\"https:\/\/www.youtube.com\/channel\/UCjrG4n3cS6y45BfCJjp3boQ\",\"https:\/\/twitter.com\/crackuexam\"],\"logo\":{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/cracku.in\/blog\/#logo\",\"inLanguage\":\"en-US\",\"url\":\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2016\/09\/logo-blog-2.png\",\"width\":544,\"height\":180,\"caption\":\"Cracku\"},\"image\":{\"@id\":\"https:\/\/cracku.in\/blog\/#logo\"}},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/cracku.in\/blog\/#website\",\"url\":\"https:\/\/cracku.in\/blog\/\",\"name\":\"Cracku\",\"description\":\"A smarter way to prepare for CAT, XAT, TISSNET, CMAT and other MBA Exams.\",\"publisher\":{\"@id\":\"https:\/\/cracku.in\/blog\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":\"https:\/\/cracku.in\/blog\/?s={search_term_string}\",\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/cracku.in\/blog\/mathematical-opeartions-questions-for-rrb-ntpc-pdf\/#primaryimage\",\"inLanguage\":\"en-US\",\"url\":\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/fig-19-03-2019_07-26-44.jpg\",\"width\":1200,\"height\":630,\"caption\":\"Mathematical Operations Questions PDF\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/cracku.in\/blog\/mathematical-opeartions-questions-for-rrb-ntpc-pdf\/#webpage\",\"url\":\"https:\/\/cracku.in\/blog\/mathematical-opeartions-questions-for-rrb-ntpc-pdf\/\",\"name\":\"Mathematical Opeartions Questions For RRB NTPC PDF - 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