{"id":27754,"date":"2019-04-22T19:10:39","date_gmt":"2019-04-22T13:40:39","guid":{"rendered":"https:\/\/cracku.in\/blog\/?p=27754"},"modified":"2019-05-08T16:53:01","modified_gmt":"2019-05-08T11:23:01","slug":"rrb-group-d-maths-questions-pdf","status":"publish","type":"post","link":"https:\/\/cracku.in\/blog\/rrb-group-d-maths-questions-pdf\/","title":{"rendered":"RRB Group-D Maths Questions PDF"},"content":{"rendered":"

RRB Group-D Maths Questions PDF<\/strong><\/span><\/h1>\n

Download Top 15 RRB Group-D Maths Questions and Answers PDF. RRB Group-D Maths questions based on asked questions in previous exam papers very important for the Railway Group-D exam.<\/p>\n

Download RRB Group-D Maths Questions PDF<\/a><\/p>\n\n

Download RRB Group-D Previous Papers PDF<\/a><\/p>\n

Take a RRB Group-D free mock test<\/a><\/p>\n

Question 1:\u00a0<\/b>Find the LCM of 7\/2, 9\/4 and 5\/3 ?<\/p>\n

a)\u00a0252<\/p>\n

b)\u00a021<\/p>\n

c)\u00a0126<\/p>\n

d)\u00a0315<\/p>\n

Question 2:\u00a0<\/b>4591.15 – 528.116 = x + 456.123. Find x ?<\/p>\n

a)\u00a03660.911<\/p>\n

b)\u00a03666.911<\/p>\n

c)\u00a03006.911<\/p>\n

d)\u00a03606.911<\/p>\n

Question 3:\u00a0<\/b>Sum of two numbers is 99 and difference is 63, then find the smaller number ?<\/p>\n

a)\u00a018<\/p>\n

b)\u00a036<\/p>\n

c)\u00a081<\/p>\n

d)\u00a054<\/p>\n

Take a free mock test for RRB Group-D<\/a><\/p>\n

770 Mocks (cracku Pass) Just Rs.199<\/a><\/p>\n\n

Question 4:\u00a0<\/b>What is the value closest to $\\sqrt{2028}$ – $\\sqrt{1152}$?<\/p>\n

a)\u00a08<\/p>\n

b)\u00a09<\/p>\n

c)\u00a010<\/p>\n

d)\u00a011<\/p>\n

Question 5:\u00a0<\/b>What is the value of $21^3 – 19^3$<\/p>\n

a)\u00a02602<\/p>\n

b)\u00a02202<\/p>\n

c)\u00a02204<\/p>\n

d)\u00a02402<\/p>\n

Question 6:\u00a0<\/b>The simplest form of $\\frac{391}{667}$ is<\/p>\n

a)\u00a0$\\frac{23}{31}$<\/p>\n

b)\u00a0$\\frac{19}{23}$<\/p>\n

c)\u00a0$\\frac{15}{19}$<\/p>\n

d)\u00a0$\\frac{17}{29}$<\/p>\n

RRB Group D previous year papers<\/a><\/p>\n

Daily Free RRB Online Test<\/a><\/p>\n

 <\/p>\n

Question 7:\u00a0<\/b>What is the average of 56, 45, 47, 61, 49, 54 and 52<\/p>\n

a)\u00a052<\/p>\n

b)\u00a054<\/p>\n

c)\u00a049.12<\/p>\n

d)\u00a063<\/p>\n

Question 8:\u00a0<\/b>If the number 254a8b is divisible by 10 as well as 9, find the value of a.<\/p>\n

a)\u00a08<\/p>\n

b)\u00a09<\/p>\n

c)\u00a06<\/p>\n

d)\u00a07<\/p>\n

Question 9:\u00a0<\/b>Find the smallest positive integer that should be multiplied to 2352 to make it a perfect square.<\/p>\n

a)\u00a02<\/p>\n

b)\u00a03<\/p>\n

c)\u00a07<\/p>\n

d)\u00a011<\/p>\n

Question 10:\u00a0<\/b>Find the greatest common divisor of the numbers 75, 155 and 195.<\/p>\n

a)\u00a05<\/p>\n

b)\u00a015<\/p>\n

c)\u00a025<\/p>\n

d)\u00a0None of the above<\/p>\n

RRB Group-D Important Questions (download PDF)<\/a><\/p>\n\n

Question 11:\u00a0<\/b>The least number n, where n>4, which when divided by 9, 11 and 12 leaves a remainder 4 is<\/p>\n

a)\u00a0396<\/p>\n

b)\u00a0400<\/p>\n

c)\u00a0796<\/p>\n

d)\u00a0None of the above<\/p>\n

Question 12:\u00a0<\/b>1818.12 + 1818.24 + 1919.19 = ?<\/p>\n

a)\u00a05545.45<\/p>\n

b)\u00a05333.44<\/p>\n

c)\u00a05555.55<\/p>\n

d)\u00a05444.44<\/p>\n

Question 13:\u00a0<\/b>75% of a number from which 10 has been deducted is 180. The number is<\/p>\n

a)\u00a0200<\/p>\n

b)\u00a0240<\/p>\n

c)\u00a0330<\/p>\n

d)\u00a0250<\/p>\n

Question 14:\u00a0<\/b>If a speed of 24 kmph is converted into m\/s, what would be the value obtained?<\/p>\n

a)\u00a06.67<\/p>\n

b)\u00a012.33<\/p>\n

c)\u00a013.33<\/p>\n

d)\u00a09.67<\/p>\n

Question 15:\u00a0<\/b>29% of 9000 + 35% of 5000 = ?<\/p>\n

a)\u00a04400<\/p>\n

b)\u00a04260<\/p>\n

c)\u00a04210<\/p>\n

d)\u00a04360<\/p>\n

General Science Notes for RRB Exams (PDF)<\/a><\/p>\n\n

Answers & Solutions:<\/strong><\/span><\/p>\n

1)\u00a0Answer\u00a0(D)<\/strong><\/p>\n

LCM of fractions = LCM of numerators\/HCF of denominators<\/p>\n

LCM of 7\/2, 9\/4 and 5\/3 = (LCM of 7,9,5)\/(HCF of 2,4,3) = 315\/1 = 315<\/p>\n

So the answer is option A.<\/p>\n

2)\u00a0Answer\u00a0(D)<\/strong><\/p>\n

4591.15 – 528.116 = x + 456.123<\/p>\n

4063.034 = x + 456.123<\/p>\n

4063.034 – 456.123 = x<\/p>\n

3606.911 = x<\/p>\n

So the answer is option D.<\/p>\n

3)\u00a0Answer\u00a0(A)<\/strong><\/p>\n

x+y = 99 —-(1)<\/p>\n

x-y = 63 —–(2)<\/p>\n

(1)-(2) ==> x+y-x+y = 99-63 ==> 2y = 36 ==> y = 18<\/p>\n

So the answer is option A.<\/p>\n

4)\u00a0Answer\u00a0(D)<\/strong><\/p>\n

The value of $\\sqrt{2025}$ = 45
\nThe value of $\\sqrt{1152}$ = 34
\nSo, the value closest to $\\sqrt{2028}$ – $\\sqrt{1152}$ = 11<\/p>\n

5)\u00a0Answer\u00a0(D)<\/strong><\/p>\n

We know that $a^3 – b^3 = (a-b) \\times (a^2 + ab + b^2) = (a-b) \\times ((a+b)^2 – ab)$
\nIn this case, $21^3 – 19^3 = (21 – 19) \\times (21^2 + 21 \\times 19 + 19^2)$
\nWhich equals $2 \\times ((21+19)^2 – 21\\times 19)$
\nThis equals $2 \\times (40^2 – 399) = 2 \\times (1600-399) = 2 \\times 1201 = 2402$<\/p>\n

6)\u00a0Answer\u00a0(D)<\/strong><\/p>\n

$\\frac{391}{667}$ = $\\frac{17 \\times 23}{29 \\times 23}$ = $\\frac{17}{29}$<\/p>\n

7)\u00a0Answer\u00a0(A)<\/strong><\/p>\n

We see that the numbers are distributed around 50.
\nSo we find the differences around 50
\nEstimated mean= 50
\nSum = +6-5-3+11-1+4+2 =14
\nn=7<\/p>\n

Actual mean = 50 + 14\/7 = 52.<\/p>\n

8)\u00a0Answer\u00a0(A)<\/strong><\/p>\n

Since the number is divisible by 10, b = 0. Since the number is divisible by 9, the sum of the digits is also divisible by 9.
\n19+a+b should be divisible by 9. Since b = 0, only a = 8, satisfy this criteria.<\/p>\n

9)\u00a0Answer\u00a0(B)<\/strong><\/p>\n

Let\u2019s factorize 2352 into its prime factors.
\n2352 = 16 * 3 * 49 = $2^4 * 3 * 7^2 $.
\nTo be a perfect square, the number should have prime factors with even indices. Hence, for 3 to have an even index, the number should be multiplied with 3.<\/p>\n

10)\u00a0Answer\u00a0(A)<\/strong><\/p>\n

The numbers are $3*5^2$, $5*31$ and $5*39$.
\nSo, the HCF of the three numbers is 5.<\/p>\n

11)\u00a0Answer\u00a0(B)<\/strong><\/p>\n

$9 = 3^2$
\n$12 = 3 * 2^2$
\nSo, the LCM of 9, 11 and 12 is $3^2 * 2^2 * 11$ = 9 * 4 * 11 = 396
\nSo, the required number should be of the form 396k + 4
\nFor k = 1, the number becomes 396 + 4 = 400<\/p>\n

12)\u00a0Answer\u00a0(C)<\/strong><\/p>\n

The summation of first two terms will be = 3636.36 and the whole summation will be 5555.55<\/p>\n

13)\u00a0Answer\u00a0(D)<\/strong><\/p>\n

Let the number be x. Hence, 75%*(x-10)=180. Hence, x=250.<\/p>\n

14)\u00a0Answer\u00a0(A)<\/strong><\/p>\n

To convert the value of a speed from m\/s to kmph, multiply the speed by 18\/5. To convert the value of a speed from kmph to m\/s, multiply the speed by 5\/18.<\/p>\n

So, value in m\/s = 24 * 5\/18 = 120\/18 = 20\/3 = 6.67 m\/s<\/p>\n

15)\u00a0Answer\u00a0(D)<\/strong><\/p>\n

29% of 9000 can be calculated as (20+9)% of 9000 i.e. 1800+810 = 2610
\nand 35% of 5000 will be = 1750
\nHence, summation will be = 1750+2610 = 4360<\/p>\n\n

DOWNLOAD APP FOR RRB FREE MOCKS<\/a><\/p>\n

We hope this Maths Questions for RRB Group-D Exam will be highly useful for your preparation.<\/p>\n","protected":false},"excerpt":{"rendered":"

RRB Group-D Maths Questions PDF Download Top 15 RRB Group-D Maths Questions and Answers PDF. RRB Group-D Maths questions based on asked questions in previous exam papers very important for the Railway Group-D exam. Download RRB Group-D Previous Papers PDF Take a RRB Group-D free mock test Question 1:\u00a0Find the LCM of 7\/2, 9\/4 and […]<\/p>\n","protected":false},"author":41,"featured_media":27757,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[169,125,31,1679],"tags":[489,491,1819,1647],"class_list":{"0":"post-27754","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-group-d","11":"tag-railway-exam","12":"tag-rrb","13":"tag-rrb-group-d-exam","14":"tag-rrb-mocks"},"better_featured_image":{"id":27757,"alt_text":"RRB Group-D Maths QuestionsPDF","caption":"RRB Group-D Maths Questions PDF","description":"RRB Group-D Maths Questions 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