Hand ShakesTrick brain teasers appear difficult at first, but they have a trick that makes them really easy.
There are ten people in a house. Everybody wants to make a hand shake with only people shorter than themselves. Assume everybody is different in height. How many hand shakes are made?
AnswerZero, because a taller person wants to shake hands with a shorter person. But the shorter person doesn't want to shake hands with him.
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