A teacher of 6 students takes 2 of his students at a time to a zoo as often as he can, without taking the same pair of c…

In how many different ways can the letters of the word ‘BAKERY’ be arranged?

In how many ways can the letters of the word MANAGEMENT be rearranged so that the two As do not appear together?

In how many ways a President, VP and Water-boy can be selected from a group of 10 people.

In how many ways can 10 examination papers be arranged so that the best and the worst papers never come together?

In how many different ways can the letters of the word TOTAL be arranged?

In a group of 6 boys and 4 girls, four children are to be selected. In how many different ways can they be selected such…

In how many ways can the letters of the word <strong>EDUCATION</strong> be rearranged so that the relative p…