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Question

Two dice are thrown simultaneously. The probability of getting a pair of aces is


  1. none of these

  2. 136

  3. 13

  4. 16


Solution

The correct option is B

136


When two dice are thrown simultaneously, the sample space associated with the random experiment is given by :

S={(1,1),(1,2),(1,3),.....(6,4),(6,5),(6,6)}

Clearly, total number of elementary events = 36

Let A be the event of getting a pair of aces.

Then A = {(1, 1)}

n(A) = 1

Hence, required probability = n(A)n(S)

=136

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