1 - How many handshakes can take place if there are 100 people and no one shakes hands twice?
2 - How many handshakes can take place if there are 100 married couples and husbands do not shake thands with their wives and women do not shake hands with each other?
A formula for each would be most helpful. Thanks!!
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Q1. Number of people =100
100÷2= 5 Therefore 50 handshake take place.
Q2. Total number of people =100
Total number of wives=50
Total number of husbands=50 womens could not shake hand with each other.
then, 50÷2=25
therefore 25 handshake take place
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