Saturday

December 20, 2014

December 20, 2014

Posted by **Cassie** on Monday, April 20, 2009 at 3:35pm.

a + bn + cn(n-1)/2! + dn(n-l)(n-2)/3! and so on.

Find the formula for each pattern.

Here is the one I'm having trouble with:

6, 15, 24, 39, 60.

Please help if you can!

Thank you! :-)

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