Elise8842
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Hi, could someone please explain the second step of the solution to me? [emoji24][emoji24]
I can't get why is it 2n-mCn , because C is for combination isn't it? For box A to be drawn and found empty, box A must have be drawn n times and box B be drawn (n-m) times, so it's only this ONE combination that satisfied the statement, I don't get what's the significance/meaning of 2n-mCn
Your help will be much appreciated [emoji38]
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