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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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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?

User Mick Feller
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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.
User Logan Wlv
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