Twelve persons meet in a room and each shake hands with all the other

1.	Twelve persons meet in a room and each shake hands with all the others.findnumber of hand shakes.
Answer» 12 people shaking hands, so 11 + 10 + 9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 = 66 handshakes. No.of handshakes = ( No.of people -1)+(No.of people-2)+........+( No.of people-No.of people) = (12-1) +(12-2) +....+(12-12) = 11+10+9+8+7+6+5+4+3+2+1= 66

Twelve persons meet in a room and each shake hands with all the others.findnumber of hand shakes.

Answer»

12 people shaking hands, so 11 + 10 + 9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 = 66 handshakes.

No.of handshakes = ( No.of people -1)+(No.of people-2)+........+( No.of people-No.of people) = (12-1) +(12-2) +....+(12-12) = 11+10+9+8+7+6+5+4+3+2+1= 66

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Twelve persons meet in a room and each shake hands with all the others.findnumber of hand shakes.

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