Q9 of 62 Page 1337

A pair of dice is thrown 4 times. If ‘getting a doublet’ is considered a success, find the probability of getting 2 successes.

As the pair of die is thrown 4 times,


The total number of outcomes = 36


Using Bernoulli’s Trial P(Success=x) = nCx.px.q(n-x)


x=0, 1, 2, ………n and q = (1-p)


The probability of success = p =


q =


probability of 2 successes = 4C2.()2()2


⇒


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