top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

All attendees to a party shakes with each other and 21 handshakes are made. How many people are attending the party?

+1 vote
332 views

All attendees to a party are introduced to one another. 21 handshakes are made in total. How many people are attending the party?

posted Sep 16, 2014 by Bheemappa G

Share this puzzle
Facebook Share Button Twitter Share Button LinkedIn Share Button

2 Answers

0 votes

7

Formula n*(n-1)/2 = 21

answer Sep 16, 2014 by Chahat Sharma
0 votes

Answer : 7

Formula n*(n-1)/2 = 21

answer Feb 26, 2016 by Sarath Chandran



Similar Puzzles
0 votes

In a party there are 123 persons present. If each of them shakes hand with all the other persons, in total how many handshakes will takes place?

0 votes

In a party there are 24 persons present. If each of them shakes hand with all the other persons, in total how many handshakes will takes place?

+1 vote

If seven people meet each other and each shakes hands only once with each of the others, how many handshakes will there have been?

+1 vote

Initially, 60% of all attendees in a school party were girls. A while later, with 8 girls and 12 boys gone, the number of girls became twice as many as the number of boys.
How many people were present initially?

...