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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:

24 × 57 × 210 × 513 × 216 × 519 × 222 × 525 × 228 × 531 × 234 × 537

Question 4

What is the value of 122 + 132 + 142 + 152 +…+ 292 + 302?

Question 5

If N = 411 + 412 + 413 + 414 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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