Answered

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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?

Sagot :

Ematio
12 * 12 equals 144. Each person plays every other person.
sugarmate
(12 * 11)/2 = 66 games

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

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