They have sent the telegram.

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 probrability.Chance that not more than one telegram will be sent over each channel is:

In each of the following questions, some statements are given and these statements are followed by two conclusions numbered I and II. You have to take the given statements to be true even if they seem to be at variance from commonly known facts. Read the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts. Statements: All telegrams are stamps. All mobiles are telegrams. Conclusions: I. Only a few telegrams are mobiles. II. Some stamps are telegrams.

Three statements are given, followed by three conclusions numbered I, II and III. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements. Statements: No telegram is a telephone. All postcards are telegrams. All envelopes are telegrams. Conclusions: I. Some postcards are telephones. II. No envelope is a telephone. Ill. No telephone is a postcard.