Ask
your own question, for FREE!
Mathematics
18 Online
OpenStudy (anonymous):
At a gathering of 10 people, each person must shake each other person's hand once. How many handshakes must there be?
Still Need Help?
Join the QuestionCove community and study together with friends!
OpenStudy (anonymous):
Well how many people involve an handshake?
OpenStudy (anonymous):
Two.
OpenStudy (anonymous):
Exactly.
OpenStudy (anonymous):
Is order important?
OpenStudy (anonymous):
It is 10C2, but why isn't it 2^10?
Still Need Help?
Join the QuestionCove community and study together with friends!
OpenStudy (anonymous):
Okay so you have the math right.
OpenStudy (anonymous):
You assume that each people has a choice. The can shake hands or they can't shake hands.
OpenStudy (anonymous):
They MUST shake hands. So you can't say 2^10 .
OpenStudy (anonymous):
Thank you!
OpenStudy (anonymous):
Welcome :) .
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
albert14ring:
Can you give me suggestions on the fastest and most organized way to be ready early in the morning to go to school without any confusion or delay? The impor
Twaylor:
how to make good breakfast food ingredients : 1 mother flat bread bananas peanut
lovelove1700:
u00bfA quu00e9 hora es tu clase?Fill in the blanks Activity unlimited attempts left Completa.
glomore600:
find someone says that that one person your talking to doesn't really like you should I take their advice and leave or should I ask the person i'm talking t
Addif9911:
Him I dimmed the light that once felt mine, a glow I never meant to lose. I over-read the shadows, let voices crowd the room where only two hearts shouldu20
EdwinJsHispanic:
Poem to my mom who proved my point "You proved my point, I am a failure. but I kinda wish, you were my savior.
Wolfwoods:
The Modern Princess "you spoke so softly to me, held me close when no one else did, loved me in a way no one else dared to.
albert14ring:
Can you give me suggestions on the fastest and most organized way to be ready early in the morning to go to school without any confusion or delay? The impor
2 hours ago
8 Replies
0 Medals
Twaylor:
how to make good breakfast food ingredients : 1 mother flat bread bananas peanut
4 hours ago
0 Replies
0 Medals
lovelove1700:
u00bfA quu00e9 hora es tu clase?Fill in the blanks Activity unlimited attempts left Completa.
4 hours ago
2 Replies
0 Medals
glomore600:
find someone says that that one person your talking to doesn't really like you should I take their advice and leave or should I ask the person i'm talking t
1 day ago
5 Replies
0 Medals
Addif9911:
Him I dimmed the light that once felt mine, a glow I never meant to lose. I over-read the shadows, let voices crowd the room where only two hearts shouldu20
2 days ago
4 Replies
0 Medals
EdwinJsHispanic:
Poem to my mom who proved my point "You proved my point, I am a failure. but I kinda wish, you were my savior.
2 days ago
6 Replies
2 Medals
Wolfwoods:
The Modern Princess "you spoke so softly to me, held me close when no one else did, loved me in a way no one else dared to.
3 days ago
11 Replies
3 Medals