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> Logic> Probability> Shapes> General
> Numbers (2)> Games> Paradoxes> Riddles
> Just Math (2)> Science> Algorithms
The false equation :
5125*466=3327287
would become true, once each of its 14 digits
were either increased or decreased by 1.

What is the correct equation?

Rem: Analytical solution preferred.
(No Solution Yet, 1 Comments) Submitted on 2014-04-22 by Ady TZIDON   
Difficulty: 2 of 5 Bonus: Eggalicious (in Logic) Rating: 2.79
You have to boil a single egg for exactly nine minutes.

All you have are two hourglasses, able to measure (in sand) seven and four minutes, respectively.

How quickly, using only these two hourglasses, can you boil an egg?

(Solution Posted, 20 Comments) Submitted on 2002-07-05 by qball   
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