By definition, a permutation is a bijection from a set to itself. Since a permutation is bijective, it is one-to-one.
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yes form cayleys theorem . every group is isomorphic to groups of permutation and finite groups are not an exception.
Prove it using deduction._______First you prove, that every permutation is a product of non-intercepting cycles, which are a prduct of transpsitions
If there is a group of 3 coloured balls, then any groups of 2 balls selected from it will be considered as a combination, whereas the different arrangements of every combination will be considered as a permutation
Not every relation is a function. But every function is a relation. Function is just a part of relation.