combination(redirected from combinatorial)
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combination,in business: see trusttrust,
in law, arrangement whereby property legally owned by one person is administered for the benefit of another. Three parties are ordinarily needed for the relation to arise: the settlor, who bequeaths or deeds the property for another's benefit; the trustee, in whose hands
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(in Russian, kombinatsiia). (1) An interdependent union, connection, or arrangement of several objects or component parts (elements) of a single object.
(2) A set of procedures for carrying out a complex plan, such as a chess combination.
(3) A contrivance, trick, or subterfuge; a deliberate maneuver to achieve a mercenary or other improper goal (commercial combination; political combination).
(4) An item of women’s underclothing (a slip).
in mathematics. Combinations of n elements taken k at a time are sets that contain k of the n elements and that differ from each other in at least one element. The number of combinations of n elements, k at a time, is denoted by , C (n, k), or and is equal to n!/k!(n - k)! (seeCOMBINATORICS).
The number of combinations of r objects chosen from a set of n is
n C r = n! / ((n-r)! r!)
where "n C r" is normally with n and r as subscripts or as n above r in parentheses.
See also permutation.