A probability problem by balaji sundaram
Probability
Level
pending
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
108/216
91/216
127/216
125/216
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