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Re: make 100 by using 1, 7, 7, 7, 7
Posted:
Nov 13, 2007 12:14 PM


In article <fhcl1n$1gp$1@agate.berkeley.edu>, magidin@math.berkeley.edu (Arturo Magidin) writes: > In article <20071113114106.785$O1@newsreader.com>, > David W. Cantrell <DWCantrell@sigmaxi.net> wrote: >>7 x 7 + 7 + 7 + 1 > > Using the usual precedence of operations, you have that this is equal > to (7x7) + 7 + 7 + 1, which comes out to 64. > > I can't come up with any way to associate them to get 100, though: > > [7 x (7+7)] + 7 + 1 = 106 > [7 x (7+7+7)] + 1 = 148 > 7 x (7 + 7 + 7 + 1) = 154 > > So... how did you get 100?
Octal?



