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December 19, 2014

December 19, 2014

Posted by **KATE** on Thursday, October 4, 2007 at 7:29am.

- MATH -
**PsyDAG**, Thursday, October 4, 2007 at 2:35pmThis is a permutation.

n! (n factorial) = n(n-1)(n-2)...1

What is your n?

http://en.wikipedia.org/wiki/Permutation

I hope this helps. Thanks for asking.

- MATH -
**PsyDAG**, Thursday, October 4, 2007 at 2:43pmMy solution assumed that each letter — even if repeated — was considered different. Thus T1 is considered different from T2 and so on.

I hope this helps a little more. Thanks for asking.

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