perplexus.info :: Just Math : Just a tiny addition

Just a tiny addition (Posted on 2014-11-18)

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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re(3): digit 3?

| Comment 4 of 5 |

(In reply to re(2): digit 3? by broll)

Bravo ! I

Posted by Ady TZIDON on 2014-11-19 00:42:24

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