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21 June, 06:49

Marty bought 4 new books today. He plans to read 2 of these while on vacation. How many combinations of 2 books from the group of 4 could he choose to read?

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  1. 21 June, 06:58
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    There are 6 different combinations of 2 books from the group of 4 that he could choose to do.

    Let's say all of the books were letters.

    Books a, b, c, and d.

    Different combinations include:

    ab, ac, ad, bc, bd, and cd.
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