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

At the end of a business conference the ten people present all shake h

1.	At the end of a business conference the ten people present all shake hands with each other once. How many handshakes will there be altogether ?
A.	20
B.	45
C.	55
D.	90
Answer» C. 55

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

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