There are 4 letters and 5 boxes in a row. Number of ways of posting these letters if all the letters are not posted in the same box is

Find the number of ways to post 5 letters in 6 post boxes such that atleast two letters are posted in the same box.

Find the number of ways of arranging the letters of the word. SINGING

Find the number of ways of arranging the letters of the word SINGING

3 letters are to be posted in 5 letter boxes in a part of the town .IF all letters are not posted in the same letter box . The number of ways of posting is

The number of ways of arranging the letters AAABBBBCC in a row is

Find the number of ways of arranging the letters of the word. MATHEMATICS

Find the number of ways of arranging the letters of the word. COMBINATION

The number of ways to rearrange the letters of the word CHEESE is

Find the number of ways of arranging the letters of the word. PERMUTATION

Find the number of ways of arranging all the letters of the word ENGINEERING