let A be defined as the set of all two digit integers that are more than 20 and let P be defined as the set of all prime numbers .how many numbers are there that belong to both these sets?

Question

let A be defined as the set of all two digit integers that are more than 20 and let P be defined as the set of all prime numbers .how many numbers are there that belong to both these sets?
1.13
2.17
3.21
4.25
explain the ans please

Reiny · Answer

You are probably just as good as googling and counting as I am Goggle a list of primes. count how many primes you see from 23 to 97

tasu · Answer

the ans is 17..