In how many ways can the letters LEADER be arranged?

Correct Answer: Option C

Explanation

The word LEADER has 1L 2E 1A 1D and 1R making total of 6! (frac{6}{1!2!1!1!1!}) = (frac{6!}{2!})

  = (frac{6 times 5 times 4 times 3 times 2 times 1}{2 times 1})

  = 360

There is an explanation video available below.