PROBLEM ON COUNTING-3) d) Combinations
By hennars
@hennars (250)
United Arab Emirates
February 4, 2007 12:43am CST
Last maths prob-help pls!
Seven friends meet in a club on a special occasion.Each person shakes hands once with every other person, and each person gives a present to every other person.
How many presents were given, and how many handshakes were made?
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