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26-05-2018
Mathematics

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A pair of dice is rolled 20 times. what is the probability that a sum of 5 is rolled at least r times

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GraceSpwho GraceSpwho

07-06-2018

The probability of the sum of 5 is 5/20 or 1/4.
Solution:
Formula: P(A) = No. of favorable outcomes / Total no. of possible outcomes
P(A) = 5/20
P(A) = 1/4

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