Can someone tell me by number which ones are wrong please
2 answers:
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1. Given a group of n people. There are C(n, r) ways of forming groups of r out of n.
2. Where C(n, r)=
3. For example, given {Andy, John, Julia}. We want to pick 2 people to give a gift: we can pick {(Andy, John), (Andy, Julia), (John, Julia)}, so there are 3 ways. So we can list and count.
4. Or we could do this with the formula C(3, 2)=
5. C(8, 6)=
So there are C(8,6)=28 ways of chosing 6 out of 8 people to form the subcommittees. <span />
2. Where C(n, r)=
3. For example, given {Andy, John, Julia}. We want to pick 2 people to give a gift: we can pick {(Andy, John), (Andy, Julia), (John, Julia)}, so there are 3 ways. So we can list and count.
4. Or we could do this with the formula C(3, 2)=
5. C(8, 6)=
So there are C(8,6)=28 ways of chosing 6 out of 8 people to form the subcommittees. <span />
Answer:
Lindsay bought 3 pants
Step-by-step explanation:
Lindsay went shopping at her favorite store.
She bought
- 4 shirt for $50 each and paid $200 for 4 shirts;
- 2 purses for $30 each and paid $60 for 2 purses;
- x pants for $40 each and paid $40x for x pants.
Thus, her total bill was
If her total bill was $380, then
Lindsay bought 3 pants