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Friday, June 10, 2016

A Puzzle to End the Week


                     9 7 3 1 4 8 2 5 6

Britain's Matt Parker has fi-i-i-i-i-inally hit the big time! He's in "Futility Closet" ;-):

http://www.futilitycloset.com/2016/06/09/divide-and-conquer-3/


The puzzle is to put the digits 1-9 in an order whereby the first two digits represent a number evenly divisible by 2, the first three digits evenly divisible by 3, first four divisible by 4... the full number is divisible by 9. The simple order 1234356789 won’t work: 12 and 123 are ok, but 1234 is not evenly divisible by 4.
Visit the site to find the answer.

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