Question

Write the no of prime no.s present between 1 to 100.

Answer 1

There are 25 prime numbers between 1 and 100.

The numbers are :-

2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89 and 97

Answer 2

The prime numbers are the numbers which are either divisible by 1 or themselves.  

So, the prime numbers between 1 to 100 are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89 and 97.  

There is a pattern to find prime numbers. Except for 2 and 5 all prime numbers end in 1, 3, 7 or 9 so that they cannot be divided by 2 or 5.

In total there are 25 prime numbers between 1 and 100.