If a number cube is rolled three hundred times, what is the expected number of times that number 2 or number 4 will be facing upward?

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24-02-2017
Mathematics

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If a number cube is rolled three hundred times, what is the expected number of times that number 2 or number 4 will be facing upward?

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Can someone help me with this

UnparalleledPi UnparalleledPi · Answer 1 · 2017-02-24T17:02:24+01:00

UnparalleledPi UnparalleledPi

24-02-2017

The probability that the die will roll 2 or 4 is 1 out of 3 or 1/3rd. 1/3rd of 300 is 100 so it is expected that it will roll either a 2 or a 4 100 times.

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