7 people meet and shake hands with one another, how many
handshakes occur?

Answer Posted / anuj

E(n-1) ie sum of n-1
for n=2 E1=1
n=3 E2=2+1=3
n=4 3+2+1=6

so for n=7 no of hand shakes will be E6=6+5+4+3+2+1=21

Is This Answer Correct ?    21 Yes 2 No



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