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28 July, 02:25

Jackie has a drawer with 20 buttons, each of different color. How many different ways can she choose three buttons for her bookbag?

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  1. 28 July, 04:30
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    To find all the different possible combinations, you multiply all the possibilities for each position.

    1st - she as 20 different possible buttons

    2nd - she would have 19 possible buttons

    3rd-she would have 18 possible buttons

    20 x 19 x 18=6840 possible ways to choose these buttons.
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