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## A Money Matter

Math brain teasers require computations to solve.

 Puzzle ID: #265 Fun: (2.41) Difficulty: (2.08) Category: Math Submitted By: Mr. G Corrected By: MattM462

What is the fewest number of American coins you need to have the exact change for every situation, in one cent increments, between one cent and one dollar?

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 cnmne Feb 02, 2004 You would need 10 coins. In order to make change for a nickel, you would need 5 pennies. thebuddhawithin Jul 02, 2004 well there are not too many half dollars in circulation so it would be ideal to have 3 quaters, 2 dimes, 1 nichol, and 4 pennies (10 coins). And no, you do not need to have 5 pennies, the point is not to make change, it is that you want to have the least amount of coins that will give you every combination up to a dollar Atropus Feb 14, 2005 It might be nice to specify the currency of the coins you are talking about... we don't have quarter dollars here in new Zealand. shadowmancer626 Jun 23, 2005 you took the only teaser i knew(and could possibly ever submit to this site)!!!!!!! vikingboy Aug 20, 2005 zero, bring a charge card horse_luver Dec 11, 2005 I got an answer similar to thebuddawithin, of 4 pennies, 2 nickels, 1 dime, and 4 quarters. Didn't include 1/2 dollars. teen_wiz Feb 15, 2006 I don't think half-dollars exist anymore in Canada. Good try though! stil Apr 23, 2006 If we choose the the arguments of thebuddhawithin over those of cnmne, we can handle a one dollar "situation" with a dollar bill and ZERO coins! Then we could substitute 2 nickels and 1 dime for the nickel and the 2 dimes and, thereby, also minimize the total value of the coins needed. SOCCER_CHICK Sep 25, 2006 there was nothing wrong with this teaser...half dollars ARE still around and (s)he says american dollars AND why would you need change for a nickel.... ChristheGreat Nov 12, 2006 Huh. ChRmD1 Apr 28, 2007 TeenWiz, it said AMERICAN coins... nothing to do with Canada s_o_s May 15, 2007 Good teaser, but I agree a hint explaining what coins they have in America would have made it easier for people who don't know.