lelebaker5520 lelebaker5520

05-09-2018
Mathematics

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There are 10 books on a shelf, of which 4 are paperbacks and 6 are hardbacks. How many possible selections of 5 books from the shelf contain at least one paperback and at least one hardback? A75 b120 c210 d246 e252

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madisonfrancisozd5lb madisonfrancisozd5lb

08-09-2018

The answer is d (246)

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