12 people have entered a chess tournament. Each person is scheduled to lay every other person once. How many games are scheduled for the tournament?

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asked Nov 6, 2016 113k views

3 votes

12 people have entered a chess tournament. Each person is scheduled to lay every other person once. How many games are scheduled for the tournament?

Mathematics
middle-school

Li Ying asked

by Li Ying

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(12 * 11)/2 = 66 games

C(12,2) --> combination of 12 taken 2 at a time = 66

DataFramed answered Nov 9, 2016

by DataFramed

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4 votes

12 * 12 equals 144. Each person plays every other person.

Alexey Kulikov answered Nov 13, 2016

by Alexey Kulikov

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