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Just a tiny addition (Posted on 2014-11-18) Difficulty: 2 of 5
Wihout changing the order, add a single digit or a mathematical sign (but not both) to make true the expression below:

(71-1)*(71+1)=7

See The Solution Submitted by Ady TZIDON    
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Comments: ( Back to comment list | You must be logged in to post comments.)
re: digit 3? | Comment 2 of 5 |
(In reply to digit 3? by Benny)

Could you please delete this comment?
  Posted by Benny on 2014-11-18 23:46:43

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