Permutations And Combinations Question 357

Question: Total number of words that can be formed using all letters of the word FAILIRE which neither begin with F nor end with E is equal to

Options:

A) 3720

B) 5040

C) 3600

D) 3480

Show Answer

Answer:

Correct Answer: A

Solution:

  • [a] Total number of words $ =7! $ Out of which 6! Start with F and 6! End with e., while 5! Start with F and end with E.

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