Question

How many four letter words can be formed using the letter of the word ineffective each of them distinct?

Answer 1

Answer:

There are 11 letters in 'INEFFECTIVE'. CASE (1): There is only set of three same letters of the letter E. So 3 same letters can be selected in one way. Out of the six remaining distinct letters we can select one in (61)=6 ways.

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Answer 2

1422 is the correct answer

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