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virtus
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There are 7 people at a party and they shake each other's hand once. How many hand shakes are there?
 2 years ago
 2 years ago
virtus Group Title
There are 7 people at a party and they shake each other's hand once. How many hand shakes are there?
 2 years ago
 2 years ago

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estudier Group TitleBest ResponseYou've already chosen the best response.2
A person can only shake the hand of 6 others.....
 2 years ago

virtus Group TitleBest ResponseYou've already chosen the best response.0
i don't think that is right
 2 years ago

smr_kml Group TitleBest ResponseYou've already chosen the best response.0
you know for what!
 2 years ago

virtus Group TitleBest ResponseYou've already chosen the best response.0
thats correct @mukushla but where does the 2 come from?
 2 years ago

virtus Group TitleBest ResponseYou've already chosen the best response.0
is it because person A shakes hands with person B And then person B shakes hands with person A
 2 years ago

estudier Group TitleBest ResponseYou've already chosen the best response.2
One can shake 6 so there are 7 by 6 but this counts a single handshake twice.
 2 years ago

higgs Group TitleBest ResponseYou've already chosen the best response.0
^they can't shake hands twice
 2 years ago

virtus Group TitleBest ResponseYou've already chosen the best response.0
oh i see so why is it 7C2?
 2 years ago

virtus Group TitleBest ResponseYou've already chosen the best response.0
like i get how you say its like 6+5+4+3+2+1 =21 which is the same ans as 7C2
 2 years ago

virtus Group TitleBest ResponseYou've already chosen the best response.0
@higgs the answer is 21 according to my solution book
 2 years ago

estudier Group TitleBest ResponseYou've already chosen the best response.2
Forget the handshakes, how many ways to choose 2 from 7 without regard to order?
 2 years ago

virtus Group TitleBest ResponseYou've already chosen the best response.0
why choose 2 from 7
 2 years ago

estudier Group TitleBest ResponseYou've already chosen the best response.2
2 people (ie 2 hands)
 2 years ago

virtus Group TitleBest ResponseYou've already chosen the best response.0
ohhhh i see , wow i guess thats a nice way to think about it
 2 years ago
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