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March 25, 2017

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HOW MANY DIFFERENT ARRANGEMENTS ARE THERE OF THE LETTERS IN TESTERS?

  • MATH - ,

    This 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 - ,

    My 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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