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kweyers59@aol.com
2005-09-26 17:35:08

Help... a problem in combinatorics..

stadndard 52 card deck - 5 cards being dealt.. what is the probability to have at least 3 non-paired cards under 9??

Santa in Florida, USA  kweyers59@aol.com

robin
2005-09-24 05:16:06

Hi,

You have probably all seen or read about Fermat receiving a letter asking if 100895598169 is prime and quickly replying that it was a factor of 112303 and 898423.
Anyway, I was trying to find out how he worked it out. Knowing the answers gives a huge help in finding a method, but don't think he did it the same way.

100895598169 X 8 = 807164785352
Sqrt of 807164785352 =  898423
100895598169 / 898423 = 112303


Can anyone come up with other methods ?

Robin

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