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A local post office is to send M telegrams which are distribut
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A local post office is to send M telegrams which are distributed at random over N communication channels, . Each to telegram is sent over any channel with equal probability. Chance that not more than one telegram will be sent over each channel is

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A local post office is to send M telegrams which are distributed at random over N communication channels, . Each to telegram is sent over any channel with equal probability. Chance that not more than one telegram will be sent over each channel is
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Question Text
A local post office is to send M telegrams which are distributed at random over N communication channels, . Each to telegram is sent over any channel with equal probability. Chance that not more than one telegram will be sent over each channel is