Select all prime numbers from the list: 21, 29, 31, 35.
Note
A prime number has no divisors other than 1 and itself. 29 and 31 are prime; 21 and 35 have smaller factors (3×7 and 5×7).
Select all prime numbers from the list: 21, 29, 31, 35.
A prime number has no divisors other than 1 and itself. 29 and 31 are prime; 21 and 35 have smaller factors (3×7 and 5×7).