# math

A number cube with sides labeled 1 through 6 is rolled two times, and the sum of the numbers that end face up is calculated. What is the probability that the sum of the numbers is 3?

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1. rolling the same die twice is no different than rolling 2 dice.

to get a three ...
1 2
2 1 ----> two ways
prob(3) = 2/36 = 1/18

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