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An n-sided die has sides labeled with the numbers 1 through n, inclusive, and has an equal probability of landing on any

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by AAPL » Fri Jul 09, 2021 6:15 am

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An n-sided die has sides labeled with the numbers 1 through n, inclusive, and has an equal probability of landing on any side when rolled. If the die is rolled twice, what is the probability of rolling 1 both times?

1) If the die is rolled twice, the probability that the two rolls are different is 80%
2) If the die is rolled twice, the probability that the two rolls are equal is 7/8

OA A
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Source: — Data Sufficiency |