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# Number of combinations

Posted on 2013-06-20
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I think this is a dumb question but if I have 25 categories and each category can either have a value of 1 or 0.  How many combinations do I get?

Thanks,
Montrof
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Question by:montrof
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TommySzalapski earned 500 total points
ID: 39263862
2^25
0

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ID: 39263864
2^25

2 to the 25th power

2 x 2 x 2 x 2 x ....  x 2  (25 times)

33,554,432
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which is 33554432
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I think you mean "permutations," not combinations. You have 25 slots, with two possibilities per slot. That means you will have 2^25 possible permutations.
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300
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Thanks that is exactly what I needed
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Actually, I might be off on my "permutation" remark. Stats & Prob was a few years ago  = )
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