Question

which number is prime? 12 16 1 11 submit

Explanation:

Step1: Recall prime number definition

A prime number is a number greater than 1 that has no positive divisors other than 1 and itself.

Step2: Analyze 12

12 can be divided by 2, 3, 4, 6, so \(12 = 2\times6=3\times4\), not prime.

Step3: Analyze 16

16 can be divided by 2, 4, 8, so \(16 = 2\times8 = 4\times4\), not prime.

Step4: Analyze 1

1 is not greater than 1, so not prime.

Step5: Analyze 11

11 has only 1 and 11 as divisors, so it is prime.

Answer:

11 (from the options: the number 11 in the fourth box)