lalapnt
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in the above pic, (n 0) = 1?? what topic in math is that? i never saw this in my high school math and only saw it in my uni class. i don't know how that is. can someone please help me?
Why Does (n 0) Equal 1 in Combinatorics?
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in the above pic, (n 0) = 1?? what topic in math is that? i never saw this in my high school math and only saw it in my uni class. i don't know how that is. can someone please help me?
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They are binomial coefficients. We define
[tex]\binom{n}{k}=\frac{n!}{k! (n-k)!}[/tex]
You have no doubt seen this before in combinatorics, but with other notation. It is a mystery to me why high school textbooks don't use the [itex]\binom{n}{k}[/itex] notation.
http://en.wikipedia.org/wiki/Binomial_coefficient
[tex]\binom{n}{k}=\frac{n!}{k! (n-k)!}[/tex]
You have no doubt seen this before in combinatorics, but with other notation. It is a mystery to me why high school textbooks don't use the [itex]\binom{n}{k}[/itex] notation.
http://en.wikipedia.org/wiki/Binomial_coefficient
lalapnt
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super! and of course i know about binomial coefficients. just like this
thank you very much. now I'm not scared anymore! :D
thank you very much. now I'm not scared anymore! :D
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It comes from the convention 0!=1.