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# Number System || 28.02.2021

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Question 1

Find the sum of all odd natural numbers less than 130.

Question 2

Find the remainder.

Question 3

Find the number of zeroes at the end of the product of the expression:

2

2

^{4}× 5^{7}× 2^{10 }× 5^{13}× 2^{16}× 5^{19}× 2^{22}× 5^{25}× 2^{28}× 5^{31}× 2^{34}× 5^{37}Question 4

What is the value of 12

^{2}+ 13^{2}+ 14^{2}+ 15^{2}+…+ 29^{2}+ 30^{2}?Question 5

If N = 4

^{11}+ 4^{12}+ 4^{13}+ 4^{14}then how many positive factors of N are there?Question 6

The number of times 2 is used while writing the numbers from 1 to 100 is

Question 7

Find the No. of Prime Factor of 240:

Question 8

A boy is asked to find square root of a number but by mistake he finds the square of number. If wrong answer is 216 times to right answer, then what is product of digits of number?

Question 9

The value of the expression is:

Question 10

A rational number between and is

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Feb 28SSC & Railway

Posted by:

Naresh RawalMember since Jul 2020

Assistant Section Officer, Central Secretariat (AIR 203) - SSC CGL 2018 #Alumnus of IIT Dhanbad