#Is my working out correct? I have a feeling I did it wrong :(

19 messages · Page 1 of 1 (latest)

half summitBOT
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tribal ravine
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Is my working out correct?
First line is the total committees possible, second line is for the married couple restriction

finite acorn
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Hm. Well, the first is correct, but I'm not 100% sure about the second.

tribal ravine
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btw my logic for solving with the restriction, is that since there can't be both from the couple, then it's either gonna be a choice of 9 men and 7 women, (the man of the couple is in the committee, or a choice of 8 women and 8 men (the woman of the couple being in the committee)

finite acorn
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I feel like we should also subtract the case when they both aren't there, so C(8, 5)C(7, 5), otherwise we are overcounting. Not 100% sure, though.

tribal ravine
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shouldn't we also substract the cases where they both are there?

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btw I thought of something

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would doing it in the following way work:

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when only man is chosen, there are 4 spots and 8 men remaining whilst for women it'll be 7 women (can't have the woman) and 5 spots

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so C(8,4)*C(7,5)

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and then use same logic for the other side

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and add them?

finite acorn
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Hm...
To be honest, not too sure. Can't say I'm too good with these types of problems,

tribal ravine
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alright np

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thx anyways!

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+close