I'm posting one puzzle, riddle, math, or statistical problem a day. Try to answer each one and post your answers in the comments section. I'll post the answer the next day. Even if you have the same answer as someone else, feel free to put up your answer, too!
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21 = Dots on a Die
ReplyDelete29 = Days in February in a Leap Year
64 = Squares on a Chess Board
5 = Digits in a Zip Code
90 = Degrees in a Right Angle