Question

You roll a 6-sided die two times.

What is the probability of rolling a divisor of 10 and then rolling a prime number?

Write your answer as a decimal.

Answer 1

Answer: 0.25

Explanation:

The numbers on a 6-sided dice are 1,2,3,4,5, and 6.

The probability of rolling a divisor of 10 is 3/6 because 1, 2, and 5 are the divisors of 10 out of 1 to 6.

The probability of rolling a prime number is 3/6 because 2, 3, and 5 are prime numbers out of 1 to 6.

To know the probability of both of these, you will have to multiply them:

3/6 x 3/6 = 9/36 or 1/4

1/4 as a decimal is 0.25

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