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How many 4 letter words can be formed by using the letters of the word ‘EXAMINATION’? I am confused about where to use Permutations and where to use Combinations.

How many 4 letter words can be formed by using the letters of the word ‘EXAMINATION’?
I am confused about where to use Permutations and where to use Combinations. 

Grade:11

1 Answers

viswanath
40 Points
9 years ago
Use permutations since order of selection is important

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