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

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

A 72

B 144

C 360

D 720

Solution

Correct Answer: Option C

The word 'LEADER' contains 6 letters, namely 1L, 2E, 1A, 1D and 1R.

Required number of ways= 6!/ (1!)(2!)(1!)(1!)(1!)

= 360