May 5, 2018 - Work out permutations and combinations for a set of items, numbers, letters separated by commas with or without repetition, with or without ... ... <看更多>
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May 5, 2018 - Work out permutations and combinations for a set of items, numbers, letters separated by commas with or without repetition, with or without ... ... <看更多>
The correct result is 7!3!⋅2!⋅2!=210. You have to consider that changing elements with the same name does not change the combination. ... <看更多>