In how many ways can the letters LEADER be arranged?
...In how many ways can the letters LEADER be arranged?
72
144
360
720
Correct answer is C
The word LEADER has 1L 2E 1A 1D and 1R making total of 6! 61!2!1!1!1! = 6!2!
= 6×5×4×3×2×12×1
= 360
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