This summer, battle lines were drawn over a simple math problem: 8 ÷ 2(2 + 2) = ? If you divide 8 by 2 first, you get 16, but if you multiply 2 by (2 + 2) first, you get 1. So, which answer is right?
Reprinted from The Joy of X: A guided tour of math, from one to infinity by Steven Strogatz. Copyright ©2012 Steven Strogatz. Reprinted with permission from Houghton ...
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