Select all prime numbers from the list: 11, 15, 17, 21.
Note
A prime number has no positive divisors other than 1 and itself; 11 and 17 have no other divisors, while 15 and 21 are composite.
Select all prime numbers from the list: 11, 15, 17, 21.
A prime number has no positive divisors other than 1 and itself; 11 and 17 have no other divisors, while 15 and 21 are composite.