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March 22, 2006
Fraction Frazzle
What is one-twentieth of one-half of one-tenth of 10,000?
Adapted from Visual Brainstorms, a brainteaser game from ThinkFun (www.thinkfun.com).
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25.
Start from the end of the question. A tenth of 10,000 is 1,000; a half of 1,000 is 500, and a twentieth of 500 is 25.
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