In a gathering, each of the guests shook hands with everybody else. If a total of 378 handshakes were made, how many guests were there? 30 O 25 O 23 JO 28
In a gathering, each of the guests shook hands with everybody else. If a total of 378 handshakes were made, how many guests were there? 30 O 25 O 23 JO 28
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section: Chapter Questions
Problem 4T: Over the past year, John has purchased 30 books. In how many ways can he pick four of these books...
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