Peter Kupfer wrote:
If the description is this: "Returns the number of combinations for a given number of objects." That would be nCr on my calculator, right?
Correct.
That function is =combine(num;num)
If it says:
"Returns the number of combinations for a given number of objects (repetition included)."
That would be nPr, right?
This one is =combinea(num;num)
The wording is a bit akward. No, "nPr" is a "permunation".
nCr(a,b) = nPr(a,b) / (a-b)!
Where '!' refers to "factorial".
What's the name of this second function in Calc? I want to test it out. I want to figure out what they mean by "repetition included". And for reference, what's the formula for combinations? (nCr).
Cheers,
Just to check myself, nCr is when you select from a group but can only pick each thing once, like Bingo.
nPr is when you can pick out of a group but you pick things multiple times. Like if I had a set {1,2,3} and I was going to pick three things, I could pick {3,3,3}. Right?
--
Peter Kupfer
OOo user since 'OO4
http://peschtra.tripod.com/open_office/ooo_front.htm
