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More formally, the number of k element subsets (or k combinations) of an n element set This number can be∗) (valid for any elements x , y of a commutative ring), which explains the name "binomial coefficient" Another occurrence of this number is in combinatorics, where it gives the number of ways, disregarding order, that k objects can be chosen from among n objects;Txt hdrsgml accession number conformed submission type 8k public document count 33 conformed period of report item information regulation fd disclosure item information financial statements and exhibits filed as of date date as Worked Example Motion Problems With Derivatives Video Khan Academy N`FtXRC fBXKCA4