Question

A single die is rolled. How many ways can you roll a number that is prime, followed by a 6?

Answer 1

3 ways

Explanation:

2 , 3 and 5 are prime numbers.

Answer 2

3 ways

Explanation:

Since 6 will remain constant throughout the testing, we just need to find all prime numbers 1-6.

1 - is not prime nor composite

2 - is prime

3 - is prime

4 - 2x2=4, so composite

5 - is prime

6 - 2x3=6, so composite

Therefore, 2, 3, and 5 are prime numbers, and there are 3 of them.