Question

How many odd prime numbers are there between $1$ to $100$ ?

Answer 1

Enlist all the prime numbers from $1$ to $100$ and eliminate the even prime numbers

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

Hence, there are $25$ prime numbers in total from $1$ to $100$

Out of these, $2$ is the only even prime number

Hence, there are $24$ odd prime numbers from $1$ to $100$.