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Posted by on Wednesday, March 31, 2010 at 5:49pm.

i have 5 coins,a penny,nickel,dime,quarter and loonie. how many different amounts of money can i pay using any combination of the coins?

  • math - , Wednesday, March 31, 2010 at 5:58pm

    I can use the penny in two ways, that is, either use it or not use it.
    The same goes for the other 4 coins
    So the number of ways is
    2x2x2x2x2 = 32
    but that includes not using any coins, which would not be an "amount of money"

    so the number of ways is 31

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