Mathematics, 11.07.2019 16:00 FailingstudentXD
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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Nine more than four times a number is the same as one less than twice the number. find the number?
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There are 10 books on a shelf, of which 4 are paperbacks and 6 are hardbacks. how many possible sele...
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