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Write the number of all possible words t...

Write the number of all possible words that can be formed using the letters of the word MATHEMATICS.

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11 objects {M}, {A}, {T}, {H}, {E}, {M}, {A}, {T}, {I}, {C}, {S} and there are 2 M's, 2 A's, 2 T's.
So, the number of words that can be formed out of the letters of the word
‘MATHEMATICS’ is = `(11!)/( 2 ! .2 ! .2 !)=4989600`
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