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## Threes and Sevens

Math brain teasers require computations to solve.

 Puzzle ID: #1180 Fun: (2.54) Difficulty: (2.56) Category: Math Submitted By: thephirm

Using the four digits 3,3,7,7 and the mathematical operators +,-,*,/ write an expression equal to 24. You must use each digit exactly once, but may use each operator multiple times, or not at all. Parentheses are allowed. The following would be a valid expression:

(7 + 3)/(7 + 3) = 1

Think fractions.
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## Comments

 Ichabod Clay Nov 05, 2001 Just for clarity, you don't need to use fractions since 7 divided by four gives you the same answer as the fraction 7/4. Very good problem! (user deleted) Feb 12, 2002 or you could try: (7*3)+(7-3)=24 pusandave Mar 16, 2002 Very good problem. I'm sorry Elsie, your answer adds up to 25. comet16 May 20, 2002 elsie, that's 25 TheNinja Oct 08, 2008 This is one of the best teasers I've seen!

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