In a gathering, the host makes sure that eachguest shakes hands with everyone else. Ifthere are 30 guests, how many handshakeswill be done?

Answered: In a gathering, the host makes sure…

College Algebra

1st Edition

ISBN:9781938168383

Author:Jay Abramson

Publisher:Jay Abramson

Chapter9: Sequences, Probability And Counting Theory

Section9.5: Counting Principles

Problem 45SE: An art store has 4 brands of paint pens in 12 different colors and 3 types of ink. How many paint...

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In a gathering, the host makes sure that each guest shakes hands with everyone else. If there are 30 guests, how many handshakes will be done?