Question

You have three $1 bills, four $5 bills, and two $10 bills in your wallet. You select a bill at random. Without replacing the bill, you choose a second bill at random. Find P($5 then $10)

1- 1/9
2- 1/12
3- 1/72
4- 2/27

Answer 1

1- 1/9

Explanation:

`p(5 then 10) = (4)/(9) * (2)/(8)`

`p(5 then 10) = (1)/(9)`

Assuming without replacement