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Mathematics 9 Online
OpenStudy (anonymous):

A pair of fair dice is rolled. What is the probability that the number landing uppermost on the first die is a 4 if it is known that the sum of the numbers landing uppermost is 7?

OpenStudy (anonymous):

need to start counting - how many combinations of both dice are there that make up 7? List them out if it helps! and then find how many of these combinations have a 4.

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