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Permutation: n Different Things Taken r at a Time

Consider the ...

Question

Consider the letters of the word INTERMEDIATE. Number of words formed by using all the letters of the given words are

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Solution

Given word = INTERMEDIATE
I,I,EEE,N,TT,R,M,D,A
2I's 3E's 2T's I,N,R,M,D,A
Number of words formed by these letter = $\frac{12!}{2! 3! 2!}$

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Permutation: n Different Things Taken r at a Time

Standard XII Mathematics

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