{"id":34033,"date":"2019-08-26T18:30:35","date_gmt":"2019-08-26T13:00:35","guid":{"rendered":"https:\/\/cracku.in\/blog\/?p=34033"},"modified":"2019-08-27T13:11:47","modified_gmt":"2019-08-27T07:41:47","slug":"number-system-questions-for-rrb-group-d-set-2-pdf","status":"publish","type":"post","link":"https:\/\/cracku.in\/blog\/number-system-questions-for-rrb-group-d-set-2-pdf\/","title":{"rendered":"Number System Questions for RRB Group-D Set-2 PDF"},"content":{"rendered":"

Number System Questions for RRB Group-D Set-2 PDF<\/strong><\/span><\/h2>\n

Download Top-14 RRB Group-D Number System Questions set-2 PDF.\u00a0RRB GROUP-D Maths questions based on asked questions in previous exam papers very important for the Railway Group-D exam.<\/p>\n

Download Number System Questions for RRB Group-D Set-2 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>What is the Lowest Common Factor of 81, 108 and 210?<\/p>\n

a)\u00a01<\/p>\n

b)\u00a03<\/p>\n

c)\u00a07<\/p>\n

d)\u00a09<\/p>\n

Question 2:\u00a0<\/b>What is the HCF of 90, 135, 210?<\/p>\n

a)\u00a03<\/p>\n

b)\u00a06<\/p>\n

c)\u00a09<\/p>\n

d)\u00a015<\/p>\n

Question 3:\u00a0<\/b>x and y are the smallest two digit prime numbers such that x = 2y + 1. What is the value of x – y?<\/p>\n

a)\u00a012<\/p>\n

b)\u00a018<\/p>\n

c)\u00a024<\/p>\n

d)\u00a030<\/p>\n

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

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

Question 4:\u00a0<\/b>What is the LCM of $7^5*8^6$, $7^3*8^4*9^2$ and $7^4*8^5*9$?<\/p>\n

a)\u00a0$7^3*8^4$<\/p>\n

b)\u00a0$7^3*8^4*9^3$<\/p>\n

c)\u00a0$7^5*8^6*9^2$<\/p>\n

d)\u00a0$7^6*8^7*9^3$<\/p>\n

Question 5:\u00a0<\/b>What is HCF of 195, 390, 312 and 702?<\/p>\n

a)\u00a07<\/p>\n

b)\u00a013<\/p>\n

c)\u00a039<\/p>\n

d)\u00a065<\/p>\n

Question 6:\u00a0<\/b>Which is the smallest number which when divided by 5,6 and 7 leaves a remainder of 2?<\/p>\n

a)\u00a0212<\/p>\n

b)\u00a0262<\/p>\n

c)\u00a0282<\/p>\n

d)\u00a0302<\/p>\n

Question 7:\u00a0<\/b>Which of the following is NOT a prime number?<\/p>\n

a)\u00a043<\/p>\n

b)\u00a053<\/p>\n

c)\u00a071<\/p>\n

d)\u00a091<\/p>\n

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

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

Question 8:\u00a0<\/b>If the square root of 5.44802281 is 2.3341, what is the square root of 5448022.81?<\/p>\n

a)\u00a023341.1<\/p>\n

b)\u00a02334.1<\/p>\n

c)\u00a0233.41<\/p>\n

d)\u00a023.341<\/p>\n

Question 9:\u00a0<\/b>What is the HCF of 28, 42 and 56?<\/p>\n

a)\u00a00<\/p>\n

b)\u00a01<\/p>\n

c)\u00a07<\/p>\n

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

Question 10:\u00a0<\/b>What is the LCM of $3^2 * 2^3$, $4^2 * 3 * 2$ and $3^3 * 2 ^4$?<\/p>\n

a)\u00a0864<\/p>\n

b)\u00a05184<\/p>\n

c)\u00a07776<\/p>\n

d)\u00a03888<\/p>\n

Question 11:\u00a0<\/b>What is the Highest common factor of: 391, 483, 943 and 253?<\/p>\n

a)\u00a017<\/p>\n

b)\u00a019<\/p>\n

c)\u00a021<\/p>\n

d)\u00a023<\/p>\n

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

Question 12:\u00a0<\/b>What is the range of the following numbers?
\n19, 23, 17, 25, 18, 20, 20, 31, 16<\/p>\n

a)\u00a015<\/p>\n

b)\u00a018<\/p>\n

c)\u00a020<\/p>\n

d)\u00a022<\/p>\n

Question 13:\u00a0<\/b>If 9765X is divisible by 11, what is the value of X?<\/p>\n

a)\u00a01<\/p>\n

b)\u00a03<\/p>\n

c)\u00a04<\/p>\n

d)\u00a08<\/p>\n

Question 14:\u00a0<\/b>Which of the following numbers is NOT a multiple of 225?
\n2025, 2925, 5675, 6975<\/p>\n

a)\u00a02025<\/p>\n

b)\u00a02925<\/p>\n

c)\u00a05675<\/p>\n

d)\u00a06975<\/p>\n

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

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

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

The lowest common factor of any set of natural numbers is 1. The Highest Common Factor of these three numbers is 3.<\/p>\n

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

90 = 3 * 3 * 2 * 5
\n135 = 5 * 3 * 3 * 3
\n210 = 2 * 5 * 3 * 7
\nSo, 3 * 5 is the common factor of the three numbers.<\/p>\n

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

Since we are interested in the smallest two digit prime numbers, let\u2019s start with the number 11.
\nIf y = 11, x = 2 * 11 + 1 = 23, which is also a prime number.
\nSo, the (x,y) set (23,11) satisfies the condition of 1) Prime numbers 2) Two digits 3) x = 2y + 1. So, the required answer is x – y = 23 – 11 = 12<\/p>\n

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

The numbers are $7^5*8^6$, $7^3*8^4*9^2$ and $7^4*8^5*9$.
\nSince, 7, 8, 9 are relatively prime, LCM of the given three numbers will contain the highest powers of 7,8,9 from all the given numbers.
\nHighest power of 7 is 5
\nHighest power of 8 is 6
\nHighest power of 9 is 2
\nSo, LCM =$7^5*8^6*9^2$<\/p>\n

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

195 = 39 * 5
\n390 = 39 * 10
\n312 = 39 * 8
\n702 = 39 * 18
\nSo, the HCF is 39<\/p>\n

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

The number is the LCM of 5,6 and 7 plus 2
\nSo, 5 * 6 * 7 = 210 + 2 = 212<\/p>\n

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

91 = 7 * 13<\/p>\n

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

5448022.81 = 5.44802281 * $10^6$
\nSo, $\\sqrt{5.44802281 * 10^6}$ = 2.3341 * 1000 = 2334.1<\/p>\n

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

14 * 2 = 28
\n14 * 3 = 42
\n14 * 4 = 56
\nSo, the Highest Common Factor of 28, 42 and 56 is 14.<\/p>\n

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

The numbers can be arranged as 3 * 24, 4 * 24, 18 * 24
\nSo, 24 is common in all the three numbers.
\nSo, the LCM = LCM( 3 , 4 ,18 ) * 24 = 36 * 24 = 864<\/p>\n

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

23 * 11 = 253
\n23 * 17 = 391
\n23 * 21 = 483
\n23 * 41 = 943<\/p>\n

So, the HCF of the given numbers is 23<\/p>\n

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

The range of the numbers is given by the largest number – the smallest number = 31 – 16 = 15<\/p>\n

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

The divisibility test is that the sum of alternating numbers is divisible by 11.
\nSo, 9 + 6 + x – 7 – 5 is divisible by 11
\nSo, x has to be 8.<\/p>\n

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

225 * 9 = 2025
\n225 * 13 = 2925
\n225 * 31 = 6975
\nOnly 5675 is not a multiple of 225<\/p>\n\n

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

We hope this Number System Questions set-2 PDF for RRB Group-D Exam will be highly useful for your preparation.<\/p>\n","protected":false},"excerpt":{"rendered":"

Number System Questions for RRB Group-D Set-2 PDF Download Top-14 RRB Group-D Number System Questions set-2 PDF.\u00a0RRB 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:\u00a0What is the Lowest Common Factor […]<\/p>\n","protected":false},"author":41,"featured_media":34040,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[169,125,31,1679,1601],"tags":[491,1637,1976,2052,1647],"class_list":{"0":"post-34033","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":"category-rrb-ntpc-je","12":"tag-rrb","13":"tag-rrb-exam","14":"tag-rrb-group-d-2019","15":"tag-rrb-maths","16":"tag-rrb-mocks"},"better_featured_image":{"id":34040,"alt_text":"Number System Questions for RRB Group-D Set-2 PDF","caption":"Number System Questions for RRB Group-D Set-2 PDF","description":"Number System Questions 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