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Math Help - [SOLVED] Amounts made up using 3 of the 6 coins

  1. #1
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    [SOLVED] Amounts made up using 3 of the 6 coins

    How many different amounts can be made up using three of the six coins: 5 cents, 10 cents, 20 cents, 50 cents, $1, $2
    i checked the answer and its 20 but the closest i've gotten to is 12

    Update:dw solved

    1)5c+10c+20c
    2)5c+10c+50c
    3)5c+10c+$1
    4)5c+10c+$2
    5)5c+20c+50c
    6)5c+20c+$1
    7)5c+20c+$2
    8)5c+50c+$1
    9)5c+50c+$2
    10)5c+$1+$2
    11)10c+20c+50c
    12)10c+20c+$1
    13)10c+20c+$2
    14)10c+50c+$1
    15)10c+50c+$2
    16)10c+$1+$2
    17)20c+50c+$1
    18)20c+50c+$2
    19)20c+$1+$2
    20)50c+$1+$2
    Last edited by waven; February 17th 2009 at 05:01 AM.
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