RANKING TEST, ALPHABET TEST
Six people were at a party. Everyone shook hands with one another. Nobody shook hands with the same person more than once. How many handshakes took place?
A10
B12
C15
D21
RANKING TEST, ALPHABET TEST
Six people were at a party. Everyone shook hands with one another. Nobody shook hands with the same person more than once. How many handshakes took place?
A10
B12
C15
D21