There sre three letters asnd three envelopes. Find the total number of wys in which letters can be put into the envelopes so that each envelope has only one letter.

There are 3 letters and 3 envelopes. Find the number of ways in which all letters are put in the wrong envelopes

There are 5 letters and 5 directed envelopes. The number of ways in which all the letters can be put in wrong envelope is

There are 3 letters and 3 directed envelopes. Write the number of ways in which no letter is put in the correct envelope.

Ravish writes letters to his five friends and addresses the correspondig envelopes.The total number of ways in which letters can be placed in the envelopes so that at least two of them are in the wrong envelopes,is

If the number of ways in which 7 letters can be put in 7 envelopes such that exactly four letters are in wrong envelopes is N, then

There are four letters and four directed envelopes.The number of ways in which all the letters can be put in the wrong envelope is a.8 b.9 c.16 d.none of these

There are n letters and n corresponding envelopes. In how many ways the letters can be placed in the enveloped (one letters in each envelope) so that no letter is put in the right envelop.

The number of ways in which four different letters can be put in their four addressed envelopes that