ProbabilityHard
Question
A local post office is to send M telegrams which are distributed at random over N communication channels, (N > M). Each telegram is sent over any channel with equal probability. Chance that not more than one telegram will be sent over each channel is:
Options
A.
B.
C.
D.
Solution
Since line are more NCM are those lies where telegrams will go
NCM × M ! = far
Total = NM [As first telegram can go in any one of n lies]
[As 2nd telegram can go in any one of n lies]
P =
NCM × M ! = far
Total = NM [As first telegram can go in any one of n lies]
[As 2nd telegram can go in any one of n lies]
P =
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