A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 3 years ago
You have four $1 bills, two $5 bills, five $10 bills, and five $20 bills in your wallet. You select a bill at random. Without replacing the bill, you choose a second bill. Find P($1, then $10).
anonymous
 3 years ago
You have four $1 bills, two $5 bills, five $10 bills, and five $20 bills in your wallet. You select a bill at random. Without replacing the bill, you choose a second bill. Find P($1, then $10).

This Question is Closed

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0A. 9/39 B. 5/64 C. 3/80 D. 1/12

kropot72
 3 years ago
Best ResponseYou've already chosen the best response.2There are 16 bills of which 4 are $1. The probability of selecting a $1 on the first selection is 4/16. There would be 15 bills remaining after making the first choice. 5 of these 15 bills would be $10 if a $1 was already selected. Therefore the probability of selecting a $10 bill on the second selection is 5/15. The required probability is found by multiplying 4/16 by 5/15.\[P($1\ then\ $10)=\frac{4}{16}\times \frac{5}{15}=\frac{1}{4}\times \frac{1}{3}=you\ can\ calculate\]
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.