If there are 12 persons in a party, and if each two of them shake hands with each other, how many handshake happen in the party?

If there are 12 persons in a party,and if each two of them shake hands with each other,how many handshakes happen in the party?

(i) If there are 12 persons in a party, and if each two of them shake hands with each other, how many handshakes happen ? (ii) In a student's reunion meeting in a school, 16 students show up. Each shakes hands with each other exactly once. Determine the total number of handshakes.

In a party of 30 people eah shakes hands with the others, Number of hand shakes took place in the party is

Twelve persons meet in a room and each shakes hand with all others. Find the number oif hand shakes.

At the end of a business conference, ten people present all shake hands with each other once. How many handshakes will there be altogether?

Eight members of a group shake hand with one another once. How many hands shakes were done altogether.