Two 2s Make 5Date: 01/03/2003 at 14:04:39 From: Jen Subject: A Mathematical Puzzle I came across a challenge problem to which I cannot seem to find a solution. "Using only two 2s and any of the standard mathematical symbols, write an expression whose value is equal to exactly five." Is it a trick question and I can use another number as well as the two 2s? Date: 01/03/2003 at 16:41:36 From: Doctor Peterson Subject: Re: A Mathematical Puzzle Hi, Jen. It took me a while to get this the first time I saw it. You'll need, besides the two 2's, a square root, a decimal point, a negative sign, and an exponentiation. See what you can do with that! If you have any further questions, feel free to write back. - Doctor Peterson, The Math Forum http://mathforum.org/dr.math/ |
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