Find the number of ways in which one can post 4 letters in 6 letter boxes.

Find the number of ways in which one can post 5 letters in 7letter boxes.

The number of ways in which one can post 4 letters in 5 letter boxes, is

STATEMENT -1: The exponent of 7 in ""^(100)C_(50) is 4. STATEMENT -2 : The number of ways in which we can post 5 letters in 12 boxes is 12^(5) .

Find the number of ways in which onee or more letters can be selected from the letter. AAAAA BBBB CCC DD EFG.

Find the number of ways in which all the letters of the word 'COCONUT' be arranged such that at least one 'C' comes at odd place.

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

Seven different letters are given. Then the number of ways in which , words of 5 letters can be formed such that atleast one of the letters is repeated is

Find the total number of ways in which 20 balls can be put into 5 boxes so that first box contains just one ball.

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.

The number of ways in which four different letters can be put in the correspondingly four addressed envelopes so that no letters are put in the correct envelope, is