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Q&A #15735

Teachers' Lounge Discussion: GCSE Coursework (Number Grid Investigation),3D cubes rule I despereatley need

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From: claire <trampolinechick@hotmail.co.uk>
To: Teacher2Teacher Public Discussion
Date: 2007050509:32:34
Subject: Re: Number Grid


hi 

10 by 10 grid 

differences: 
2x2 = 10
3x3 = 40
4x4 = 90 
5x5 160 
the pattern is when u take the zero off the difference they are all
sqared numbers 

the formular is nxn (n-1)(n-1)


hope this helps 

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