A Money Matter
Math brain teasers require computations to solve.
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?
A total of nine coins.
Four pennies, one nickel, two dimes, one quarter, and one half-dollar.
Feb 02, 2004
|You would need 10 coins. In order to make change for a nickel, you would need 5 pennies.|
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|
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.|
Jun 23, 2005
|you took the only teaser i knew(and could possibly ever submit to this site)!!!!!!! |
Aug 20, 2005
|zero, bring a charge card|
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.|
Feb 15, 2006
|I don't think half-dollars exist anymore in Canada. Good try though! |
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.
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.... |
Nov 12, 2006
Apr 28, 2007
|TeenWiz, it said AMERICAN coins... nothing to do with Canada|
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.|
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