Which of the following numbers are prime? Select all that apply.
Note
17 and 19 have no divisors other than 1 and themselves, while 15 and 21 are composite (15 = 3×5, 21 = 3×7).
Which of the following numbers are prime? Select all that apply.
17 and 19 have no divisors other than 1 and themselves, while 15 and 21 are composite (15 = 3×5, 21 = 3×7).