**Number System Questions For Railway Group-D PDF:**

Download Number System Questions For Railway Group-D PDF with detailed solutions. Important Practice questions based on previous year railway exam papers.

Download Number System Questions For Railway Group-D PDF

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**Question 1:** What is the smallest number by which 3600 must be divided to make a perfect cube ?

a) 45

b) 50

c) 300

d) 450

**Question 2:** The H.C.F. of two numbers is 11 and their L.C.M. is 7700. If one of the numbers is 275, the other is :

a) 279

b) 283

c) 308

d) None of the above

**Question 3:** 994 x 1006 is equal to :

a) 999664

b) 999644

c) 996644

d) 999964

**Question 4: **The sum of two numbers is 45 and their ratio is 7:8. The two numbers are:

a) 20, 25

b) 21, 24

c) 22, 23

d) None of the above

**Question 5: **The square of 349 is :

a) 122801

b) 122881

c) 121801

d) None of the above

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**Question 6:** Arrange 2/3; 4/5; 1/2; 3/4 in descending order :

a) 4/5 > 2/3 > 1/2 > 3/4

b) 1/2 > 2/3 > 4/5 > 3/4

c) 3/4 > 1/2 > 4/5 >2/3

d) 4/5 > 3/4 > 2/3 > 1/2

**Question 7:** Find the number which is as much greater than 84 as it is less than 108 :.

a) 92

b) 94

c) 96

d) 98

**Question 8:** In a school 10% of the boys are same in number as 1/ 4 th of the girls. What is the ratio of boys to girls in the school?

a) 3 : 2

b) 5 : 2

c) 5 : 3

d) 4 : 1

**Question 9:** The average of 0.3, 3, 0.03 and 0.002 is :

a) 833

b) 83.3

c) 0.803

d) 0.833

**Question 10:** The square root of 7744 is :

a) 98

b) 92

c) 88

d) 82

Railway Group-D All Important Questions PDF

__Answers:__

**1) Answer (D)**

**2) Answer (C)**

**3) Answer (D)**

**4) Answer (B)**

**5) Answer (C)**

**6) Answer (D)**

**7) Answer (C)**

**8) Answer (B)**

**9) Answer (D)**

**10) Answer (C)**