the act of arranging elements into specified groups without regard to order
a collection of things that have been combined; an assemblage of separate parts or qualities
an alliance of people or corporations or countries for a special purpose (formerly to achieve some antisocial end but now for general political or economic purposes)
a group of people (often temporary) having a common purpose; "they were a winning combination"
a sequence of numbers or letters that opens a combination lock; "he forgot the combination to the safe"
a coordinated sequence of chess moves
百科解释
In mathematics a combination is a way of selecting several things out of a larger group, where (unlike permutations) order does not matter. In smaller cases it is possible to count the number of combinations.