04-24-2007, 11:55 PM
AOA,
GUESS
20 friends meet each other in a party after long time
each shakes hands with every other exactly once.
tell us the total number of hand shakes???
[)]
GUESS
20 friends meet each other in a party after long time
each shakes hands with every other exactly once.
tell us the total number of hand shakes???
[)]