Add together three of the following numbers each time to score 20. Each number can be used as many times as you wish.

How many different combinations are there?

2 4 6 8 10 12 14

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Add together three of the following numbers each time to score 20. Each number can be used as many times as you wish.

How many different combinations are there?

2 4 6 8 10 12 14

...