Answer to Question #178225 in Statistics and Probability for Edwin

Question #178225

Two dice are tossed. Find the probability of getting ‘an even number on the first dice or a 

total of 8 ‘.


1
Expert's answer
2021-04-15T06:57:33-0400

If Events A and B are independent, the probability that Event A OR Event B occurs is equal to the probability that Event A occurs plus the probability that Event B occurs minus the probability that both Events A and B occur:

P(A or B)=P(A)+P(B)−P(A and B)

The probability of getting an even number at the first die is (as the probability of even = the probability of odd )

The probability of getting a total of 8 is , as there are 5 different favorable scenarios: (2,6), (6,2), (3,5), (5,3) and (4,4).

The probability of getting an even number at the first die AND a total of 8 is

The probability of getting an even number at the first die OR a total of 8 is


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