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in Statistics and probability by (52.6k points)

Four fair dice D1, D2, D3 and D4, each having six faces numbered 1, 2, 3, 4, 5, and 6, are rolled simultaneously. The probability that D4 shows a number appearing on one of D1, D2 and D3 is 

(A) 91/216 

(B) 108/216 

(C) 125/216 

(D) 127/216

1 Answer

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Best answer

Answer is (A) 91/216

Required probability is

1 - 6.53/64 = 1 - 125/216 = 91/216

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