rolling a multiple of 3 from a fair numbered cube

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2 Answers

.......... 60 times ..........
by Level 3 User (3.2k points)

Assuming the faces are numbered 1-6, then the multiples of 3 are 3 and 6 only. The chance of rolling 3 or 6 is 2/6=1/3. On average rolling the cube 30 times you will get a multiple of 3 30/3=10 times.

by Top Rated User (840k points)

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