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January 28, 2015

January 28, 2015

Posted by **suzie** on Thursday, March 31, 2011 at 11:28am.

in arrays as shown below with a line drawn to show the array as 3/6?

...

...

...

and

....

....

....

....

array shows 6/10?

- math -
**Reiny**, Thursday, March 31, 2011 at 12:23pmif n is a natural number

then

n^2 generates the square numbers

(n^2 + n)/2 generates the triangular numbers

Does that help?

- math -
**bailey**, Wednesday, January 11, 2012 at 1:55am810

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