Select all prime numbers from the list: 15, 17, 21, 23.
Note
A prime number has no positive divisors other than 1 and itself; 17 and 23 meet this criterion, while 15 and 21 are composite.
Select all prime numbers from the list: 15, 17, 21, 23.
A prime number has no positive divisors other than 1 and itself; 17 and 23 meet this criterion, while 15 and 21 are composite.