#Is my working out correct? I have a feeling I did it wrong :(
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Is my working out correct?
First line is the total committees possible, second line is for the married couple restriction
Hm. Well, the first is correct, but I'm not 100% sure about the second.
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)
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.
shouldn't we also substract the cases where they both are there?
btw I thought of something
would doing it in the following way work:
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
so C(8,4)*C(7,5)
and then use same logic for the other side
and add them?
Hm...
To be honest, not too sure. Can't say I'm too good with these types of problems,