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  • Two dice are thrown What is the probability that the sum of the numbers appearing on the two dice is 1, if 5 appears on the fi

 Two dice are thrown. What is the probability that the sum of the numbers appearing on the two dice is 11, if 5 appears on the first

A)  1/36 

B)  1/6

C)   5/6     

D)   None of these

Answers (1)

best_answer

Sample space: 36

Event A :-First die always exhibit 5

              {(5,1),(5,2),(5,3),(5,4),(5,5),(5,6)}

Event B :-Numbers appeared have a sum 11

              {(5,6),(6,5)}

\\P(A \cap B )=(5,6)\\P(B|A)=P(A \cap B)/P(A)=\frac{1/36}{6/36}=1/6

Posted by

himanshu.meshram

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