A change machine changes dollar bills into quarters and nickels. If you receive 12 coins after inserting a dollar bill, how many
2 answers:
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The total number of arrangements for all of them to be women is:
C(7, 4) because the order does not matter; we'd still have the same arrangements.
Now, we can simplify this:
Now, the total number of arrangements, without restriction, is simply: C(12, 4) because we don't care who we pick.
C(7, 4) because the order does not matter; we'd still have the same arrangements.
Now, we can simplify this:
Now, the total number of arrangements, without restriction, is simply: C(12, 4) because we don't care who we pick.