# Number System Questions For Railway Group-D PDF

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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.

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

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

a) 4/5 &gt; 2/3 &gt; 1/2 &gt; 3/4
b) 1/2 &gt; 2/3 &gt; 4/5 &gt; 3/4
c) 3/4 &gt; 1/2 &gt; 4/5 &gt;2/3
d) 4/5 &gt; 3/4 &gt; 2/3 &gt; 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