Ask
your own question, for FREE!

Mathematics
73 Online

OpenStudy (anonymous):

Suppose that 3 of the 200 people who answered a survey are selected to win a travel bag as a thank-you gift. How many different ways could the selection of 3 people be made?

Still Need Help?

Join the QuestionCove community and study together with friends!

OpenStudy (anonymous):

\[\dbinom{200}{3}=\frac{200\times 199\times 198}{3\times 2}\]

OpenStudy (anonymous):

what is in the parenthesis?

OpenStudy (anonymous):

\[=200\times 199\times 33=1313400\]

OpenStudy (anonymous):

read "200 choose 3" the number of ways to choose 3 from a set of 200

OpenStudy (anonymous):

it really just restates the question. the arithmetic on the right gives the answer

Still Need Help?

Join the QuestionCove community and study together with friends!

OpenStudy (anonymous):

ohh ok got it ;)

OpenStudy (anonymous):

reason as follows: 200 choices for one prize then 199 for the second and 198 for the third, but then divide by 6 because that is how many ways you can reorder the 3 people, and you only want to count once

Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!

Join our real-time social learning platform and learn together with your friends!

Latest Questions

Subshilava:
In i Will Pronounce Your Name," how does the feeling associated with the name, Na

1 hour ago
4 Replies
0 Medals

axie:
Car render bc I like to show how easy it is to design cosmetic work

3 hours ago
8 Replies
1 Medal

tparson23:
What does the author intend to suggest by repeatedly referring to cell phones as a u201ctemptationu201d? Responses A: The appeal of cell phones is difficult

1 hour ago
11 Replies
1 Medal

TheAmazingKbw:
write a poem and post it! imma go first: Wild~ Love shouldnu2019t be as wired as

3 hours ago
3 Replies
1 Medal