have eight balls all of the same size. 7 of them weigh the same, and
one of them weighs slightly more. How can you fine the ball that is
heavier by using a balance and only two weighings?
do you cut a rectangular cake into two equal pieces when someone has
already taken a rectangular piece from it? The removed piece an be any
size or at any place in the cake. You are only allowed one straight cut.
How many piano tuners are there in the entire world?
What gives you joy?
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