From mathy mind-benders to eye-fooling illusions, here are 70 perplexing puzzles of every kind. But they all have one key thing in common--a wrong answer that seems so right In Puzzle Me Twice, you'll have to think--and think again--to overrule your first instinct and uncover the truth. For example:
If a hen and a half lays an egg and a half in a day and a half, how many eggs do half a dozen hens lay in half a dozen days?*
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