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Combinatorics Difficulty 3.9 AMC 10/12 Find the answer United States
Problem:
12 points are placed around the circumference of a circle. How many ways are there to draw 6 non-intersecting chords joining these points in pairs?
A number or a short expression. Fractions can be typed as 3/2, and spacing doesn't matter.
Solution
Solution:
C (number of chords) =C(6)=132.
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