In mathematics, a combination is a selection of items from a set that has distinct members, such that the order of selection does not matter (unlike permutations).

It is a problem that most electroacoustic educators seek to address in combination with the provision of extensive practical composition skills.

The resulting steel appears to achieve a combination of strength and toughness that is comparable to that of modern steels that are very rich in alloy content and, therefore, very expensive.

必应词典为您提供combination的释义，美 [ˌkɑmbɪˈneɪʃ (ə)n]，英 [ˌkɒmbɪˈneɪʃ (ə)n]，n. 结合；联合；混合；结合体； 网络释义： 组合；混合性皮肤；合并；

In English we use the word combination loosely, without thinking if the order of things is important. In other words:

Aug 1, 2025 · Find the number of ways of choosing r unordered outcomes from n possibilities as nCr (or nCk). Combinations calculator or binomial coefficient calcator and combinations formula. Free online …

Combinations are selections made by taking some or all of a number of objects, irrespective of their arrangements. The number of combinations of n different things taken r at a time, denoted by nCr. …

the set or series of numbers or letters used in setting the mechanism of a combination lock

The meaning of COMBINATION is a result or product of combining; especially : an alliance of individuals, corporations, or states united to achieve a social, political, or economic end.

Combination In mathematics, a combination refers to a selection of objects from a collection in which the order of selection doesn't matter. Think of ordering a pizza.