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Question:

If a hexahedral die is rolled two times, what’s the probability of NOT rolling a five both times?

A 25/36
explanation

The probability of rolling a 5 is 1 out of 6 (1/6 ), so the probability of NOT rolling a 5 is 1 − 1/6 , or 5/6 . The probability of not rolling a 5 twice is 5/6 × 5/6, or 25/36.