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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

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Answer

(3 + 3/7) * 7 = 24
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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
TheNinjaAau*
Oct 08, 2008

This is one of the best teasers I've seen!

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