What is the difference between permutation and combination?
The main difference between permutations and combinations depends on order. Permutation refers to the arrangement of the number of objects. For example, if we're arranging notebooks on a bookshelf, mainly the order in which they are placed matters, and thus, it is a permutation problem. On the other hand, for Combination we refer to selecting objects without the order. If we're selecting a group from a crowd, the arrangement doesn’t matter, only the selection does, thus it's makes it a combination problem.
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