Question

I was asked how many odd prime numbers are between 1 and 20
2,3,5,7,11,13,17,19= 8 numbers
I was told this is only half of the answer. Is there another answer?

Answer 1

2 is not odd.

Answer 2

oops

Answer 3

I meant 1 not 2

Answer 4

An odd prime number is a number that can only be divided by itself and one. There are more than two odd prime numbers

Answer 5

primes = 1,2,3,5,7,11,13,17,19
odd = 1,3,5,7,9,11,13,15,17,19