Quote:
Originally Posted by Matt L
You're correct except for the use of the term "factorial." You're thinking of combinatorics, which isn't part of this problem.
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Actually its is part of the same type of math solutions. I was going to add:
That works if the items can be the same as any other, or are the same. (i.e. all female puppies)
Now, if you want the odds (or number of combinations)of 5 items coming up different than the rest in any non-identical sequence:
It’s:
5x4x3x2x1 or 120 for 120 different combinations of 5 items. Thus, you’d have about a 1 in 120 chance of picking 5 different items out of a hat in the same order twice.
I didn't want to use the term “factoral statistical analysis”, as words that most spell checkers would flag start popping up if he were to go looking. Sorry.
