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Sponge City
Thursday, 18 October 2012
DAY 405
A thick rope will burn its entire length in one hour when one end is set on fire. How could you use the rope to measure 1/2 hour?
Answer:
Set both ends on fire at the same time.
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DAY 406 Ten students take a test with a maximum s...
DAY 405 A thick rope will burn its entire length...
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