Question
Three 6 faced dice are thrown together. The probability that no two dice show the same number on them is -.
Answer: Option B
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No two dice show same number would mean all the three faces should show different numbers. The first can fall in any one of the six ways. The second die can show a different number in five ways. The third should show a number that is different from the first and second. This can happen in four ways.Thus 6 * 5 * 4 = 120 favourable cases.The total cases are 6 * 6 * 6 = 216.The probability = 120/216 = 5/9.
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