Re: make 100 by using 1, 7, 7, 7, 7
- From: Robert Israel <israel@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Tue, 13 Nov 2007 12:22:13 -0600
"Benjamin A. Bartsch" <benjamin.a.bartsch@xxxxxxxxx> writes:
dangerousgam...@xxxxxxxxx schrieb:
So, using only +, -, x, /, and parentheses, and ONLY these numbers:
1, 7, 7, 7, 7
how can you make 100? Is there more than one solution?
--> (1/7+7)*(7+7)
Benjamin
Yes, and that's the only solution (up to commutativity).
--
Robert Israel israel@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Department of Mathematics http://www.math.ubc.ca/~israel
University of British Columbia Vancouver, BC, Canada
.
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