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anonymous
 5 years ago
100 people are present in a party. If each of them must do a handshake with all the other people, how many handshakes should be done? Please explain how to get the answer, thanks!
anonymous
 5 years ago
100 people are present in a party. If each of them must do a handshake with all the other people, how many handshakes should be done? Please explain how to get the answer, thanks!

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0you need 2 people for an hand shake and u have 100 people so i think that its C(100,2) but i am not sue of it..

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0\[\sum_{n=1}^{99}n=\frac{1}{2}\times99\times100=4950\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Could you solve it using factorials, please?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0hmm i found the answer as 9900

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0if there are 3 people: 1,2 ; 1,3 ; 2,3 .... is that right?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Think about it like this: the first person has 99 people to shake hands with, the second person has 98 because they've already shaken hands with the first, the third has 97...

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yea but its harder to calculate this like that... so i think C(100,2) better way of solve

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.05054 if we do that ..... add all the numbers from 1 to 100 :)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0No, all the numbers from 1 to 99.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0wouldnt the last guy have noone to shake hands with?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0mhmh yea but there is 100 people and they and we need 2 people to shake hands so that it should be 100 x 99 /2,

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Yeah, the last guy has noone to shake hands with, that's why it's sum of the first 99 integers, not the first 100.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.05.4321 4.321 3.21 2.1 1.0 i get 5 people with 10 shakes 5(4)/2 = 10 8.7654321 7.654321 6.54321 5.4321 4.321 3.21 2.1 1.0 8 people with 28 shakes 8(7)/2 = 28 I spose it works :) 100(99)/2 = 99*50 = 4950 yay!!

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0factorial would be: 100! 100*99  =  2! (1002)! 2

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0its the same with C(100,2)
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