2x2x3=8, 3x3x4=10, 4x4x5=16, 8x8x9=??

Please can u help me and tell me how you solved it ? Thannnnkss

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- Jul 16th 2013, 10:13 PM #1

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- Jul 16th 2013, 10:51 PM #2

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## Re: Impooortant

Hey Katekadah.

It could literally be any number of sequences but each successive difference has a difference of n! The sequence {8,10,16} when looked at in terms of differences is {2!,3!} so if you apply this pattern then you get a difference of (2!,3!,4!,5!,6!,7!} which means the final number if 2! + 3! + 4! + 5! + 6! + 7! using this specific pattern.

Remember that you can have potentially infinite numbers of sequences just like you can have infinite numbers of polynomials with specific roots.

- Jul 16th 2013, 11:30 PM #3

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- Jul 16th 2013, 11:49 PM #4

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- Jul 17th 2013, 12:50 AM #5

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- Jul 17th 2013, 12:56 AM #6

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- Jul 17th 2013, 01:32 AM #7

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