Math brain teasers require computations to solve.
What fifty (American) coins equal exactly one dollar?
40 Pennies, 2 dimes, and 8 nickels.
Nov 01, 2001
|What about 45 pennies, 2 nickels, 2 dimes and a quarter?|
Jul 31, 2002
|That also works. In general, you can substitute a quarter and 23 pennies (24 coins, 48 cents) for 6 nickels and 18 pennies (also 24 coins and 48 cents), but you can only do that once to the initial solution.|
The key to this problem is to recognize that the average value has to be 2 cents per coin, so you need to group enough pennies with each larger coin to keep the average of each group at 2 cents per coin.
Aug 01, 2003
|THE US MINTED A 2CENT PIECE FOR SOME YEARS 1800'S|
Jul 13, 2004
|Information on US 2-cent coins: www.coinfacts.com/two_cents/two_cents_by_date.html|
Oct 27, 2005
|If this was the UK, it would be:|
40 1p's, 2 10p's, 8 5p's (£1).
Nov 02, 2005
|Wait! Here is the UK's more sensible option. 50 2p's .|
Feb 06, 2006
|good one! |
Feb 12, 2006
|2p coins sound like the way to go ^_^|
My country (New Zealand) got rid of 2c coins in 1989-1990.
We are about to lose 5c coins also.
Then again, most transactions here are electronic.
Jul 03, 2006
|that was fun!!|
Sep 08, 2006
|I agree with Rado, but don't mind that there isn't just one answer. I enjoyed thinking it out without it giving me a headache. Thanks for a good teaser!|
Mar 04, 2007
|E and Z are weid letters but when put togetherr they make ez and i dont know what ez means!! well ne way this one was easy|
Sep 08, 2013
|The easiest way to solve this is to make a permutation-hunting program.|
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