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An experiment consists of rolling two fair number cubes. What is the probability that the sum of the two numbers will be 4? Express your answer as a fraction in simplest form

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Possible number of permutaions that the sum is 4 on two fair dice:

1 & 3

2 & 2

3 & 1

There are only 3 ways to make a sum of 4. Each cube has 6 digits. So, 6 x 6 is 36.

Answer: 3/36 or 1/12

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