Did you solve it? Are you smarter than a Brazilian 15-year-old?
by Alex Bellos from on (#35VAM)
The answers to today's puzzles
On my puzzle blog earlier today I set this question from Brazil's State School Mathematics Olympiad
Homero is clutching three identical pieces of string in his fist, as illustrated below left. He asks Sofia to tie two ends of the string, chosen at random, at either side of his fist, as illustrated below centre, so that there is one free end at either side.
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