In a single throw of two dice, find the probability of
getting a total of 9 or 11
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What is the probability of getting 3 or 4 in 3 consecutive rolls of a dice ?
two, trains, one from howrah to patna and the other from patna to howrah, start simultaneously. After they meet, the trains reach their destinations after 9 hours and 16 hours respectively. What is the ratio?