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Consider the letters of the word 'MATHEM...

Consider the letters of the word 'MATHEMATICS' Possible number of words taking all letters at a time such that at least one repeating letter is at odd posi- tion in each word is

A

`(11!)/(2!2!2!) - (9!)/(2!2!)`

B

`(9!)/(2!2!2!)`

C

` (9!)/(2!2!)`

D

`(11!)/(2!2!2!) `

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The correct Answer is:
D
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