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CBSE Class 11-science Answered

the number of triangle formed by joining the vertices of a hexagon
Asked by lavanya.toshit | 21 Feb, 2023, 09:16: PM
answered-by-expert Expert Answer
Number of vertices of a hexagon = 6
Now, a triangle can be formed by joining three vertices.
Therefore, number of triangles formed equals C presuperscript 6 subscript 3 equals fraction numerator 6 factorial over denominator 3 factorial 3 factorial end fraction equals fraction numerator 6 cross times 5 cross times 4 cross times 3 factorial over denominator 3 factorial 3 cross times 2 end fraction equals 5 cross times 4 equals 20
Answered by Rashmi Khot | 21 Feb, 2023, 09:26: PM
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