A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 4 years ago
Scott has eight CDs, and he picks two to take to work each day. How many different ways can Scott choose two CDs?
a.)56 B.)28 C.)20,160 D.)112
anonymous
 4 years ago
Scott has eight CDs, and he picks two to take to work each day. How many different ways can Scott choose two CDs? a.)56 B.)28 C.)20,160 D.)112

This Question is Closed

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[\frac{8\times 7}{2}\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\( {8 \choose 2} =28\) so, B is correct.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.08 choices for first one, then 7 for second one, and since order doesn't matter you divide by 2 because there is no difference between picking first slayer and then britney spears, or first britney spears and then slayer

perl
 4 years ago
Best ResponseYou've already chosen the best response.0you divide by 2 because you have overcounted twice as much,
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.