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How many words can be formed by taking four different letters of the word MATHEMATICS ?

(a) 756 

(b) 1680 

(c) 2454 

(d) 18

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Best answer

Correct option: (c) 2454


M-2 times

T-2 times

a-2 times, H, E, I, C, S

The words with two letters are alike

words with two letters alike and 2 distinct 

words with all letters distinct 

So, Total words = 2454

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