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What is a permutation?

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A permutation is an arrangement of objects in a specific order. The order matters in permutations.

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What is a combination?

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A combination is a selection of objects where the order does not matter. It focuses on the group rather than the arrangement.

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When do you use permutations?

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Use permutations when the arrangement or order of the items is important.

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When do you use combinations?

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Use combinations when the arrangement or order of the items is not important.

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How many ways can you choose 4 equal prize winners from a group of 15 attendees?

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How many ways can Kim complete her homework in 5 subjects?

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How many ways can the word 'TREE' be arranged?

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How many ways can the batting order for nine players on a 16 person team be chosen?

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How many handshakes are there when 50 men at a meeting shake hands with everyone else?

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What is the formula for permutations of n items taken r at a time?

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