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Holiday Puzzle 2015 #3 – Math Riddles

December 3rd, 2015 by John Lehet

“You can observe a lot by watching.” – Yogi Berra

It’s my favorite today – Math Riddles!  These are all original.  Some are from my riddle book Riddle-Me Math and some are new.  I love riddles because they are often very simple to state, but at the same time, very difficult to solve.  There are five riddles below, dealing with numbers and relationships (e.g. proportions).  Riddles typically require a bit of thought and their solutions may not be immediately seen.  That’s the challange!  Don’t give in, keep thinking about them and try to get each solution without being told.  Your first few guesses may seem crazy, but keep plugging along – even the best riddlers take their time and make a few mistakes.

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1. What is the only number with the same number of letters as its name?

2. What number is half the number of letters as its name?  (there are two answers – try to get them both!)

3. What number is equal to five times the number of letters in its name?

4. If a month lasted only an hour, then a year would last how long?

5. If a dime was a year, then what would a dollar be?

I hope you enjoy these riddles. Good Luck and pass the puzzles onto others who may enjoy them!