1.

The total number of 7-letter words that can be formed using the letters of the word MATHEMATICS such that the repeating letters should be placed in odd places, whereas the non-repeating letters should be placed in even places, is

Answer» The total number of 7-letter words that can be formed using the letters of the word MATHEMATICS such that the repeating letters should be placed in odd places, whereas the non-repeating letters should be placed in even places, is


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