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cavendish | 19:24 Tue 14th Mar 2006 | Quizzes & Puzzles
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If 8 is first, 5 is second, and 4 is third, which number is tenth in the same context?
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Avatar Image what?
Hi Cavendish...

This one was tough... however there is possibility that I didn't make mistake, and what's below is true

n^2 - 1
An = A1 - -----------
n - 1

So, the tenth is -3.

Nevertheless I do hate math, but have to learn it :(
20:41 Tue 14th Mar 2006
Avatar Image what?
Once more...

An = A1 - (n^2 - 1)/(n-1)
20:42 Tue 14th Mar 2006
Avatar Image Gnu
So, they're not alphabetical then!
22:01 Tue 14th Mar 2006
Avatar Image mibn2cweus
I no which number is eleventh!
02:43 Wed 15th Mar 2006
Avatar Image cavendish
Question Author
Thank you all. I've got it now.
08:38 Wed 15th Mar 2006
Avatar Image Scotman84
If you enter 8, 5 and 4 into excel and use autofill, 10th is -10.3333
19:03 Thu 16th Mar 2006

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