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11. Write a few sentences explaining how you can distinguish a question about permutations from a question about combinations.

User RaZik
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Answer:

Whenever the position matters, use permutation.

If position does not matter, then it's a case of combination.

Explanation:

Consider the provided information.

Whenever the position matters, use permutation.

For example: If (X,Y) and (Y,X) are different, it is a permutation question.

In Permutations every small detail matters.

For example: David, John and Stuart is different from John, David, and Stuart (As the order is different).

If position does not matter, then it's a case of combination.

For example: (X,Y) is the same as (Y,X), It is a combination question.

In Combinations the small details don’t matter.

For example: David, John and Stuart is not different from John, David, and Stuart.

User Clockworkgeek
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