In how many ways can one post 3 letters in 5 post boxes?

In how many ways can the letters in the word GUWAHATI be arranged such that all the vowels are together

In how many ways can the letters of the words ALGEBRA be arranged in the form of words so that the two A's donot come together?

In how many ways can seven person be seat in a row of seats if two persons insist on sitting next to each other?

In how many ways can the letters of the words DIRECTOR be arranged in the form of words so that the two R's do not come together?

In how many ways can the letters of the words FRACTION be arranged so that the three vowels are never together?

In how many ways can 5 boys and 3 girls stand in a row such that no two girls are together?

In how many ways can the letters of the words PERMUTATIONS Vowels are together.

In how many ways can the letters of the words PERMUTATIONS words start with P and end with S.

There are six period every day in a school on 5 subjects are to be taught in a day.In how many ways can the subjects be taught in a days?

A group consists of 4 girls and 7 boys.Ion how many ways can a tean of 5 members be selected so that the team has at least one boy and one girl?