What is the probability of the event that you roll a total of two or twelve on the two dice?

Question

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Answer 1

P(roll a total of 2 or 12 on a pair of fair 6-sided die, numbered 1 through 6)

# ways you want / # ways anything can happen

Only 1 way to roll a 2 (roll 1,1).

Only 1 way to roll a 12 (roll 6,6).

# ways to roll (2 or 12) = 2

# ways to roll anything:  6 * 6 = 36

P(roll 2 or 12) = 2 / 36 = 1 / 18 = about 0.05555