THE PUZZLET PAGE

PUZZLET 002
Make 100 From A PanDigital

Puzzlet 002 is based on what is known as the Pandigital: an integer containing every digit.  In this particular case, we're dealing with the 9-digit Pandigital, since the zero isn't used.

Take all the digits 1 through 9 in order, and insert as many plus and minus signs as you wish, wherever you want, to make an arithmetic sum of 100.


Example:  123 + 45 - 67 + 8 - 9 = 100

Are there any more ways of punctuating a 9-digit Pandigital with plus and minus signs to make a sum of 100 as in the example above?  If so, what are they?

Versions of this poser have been around a long time, but my solution contains something I've never seen before.  Can you find it for yourself?




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Last Updated: January 7th, 2010.