Probability 81637
We randomly select three different points from the vertices of a regular heptagon and connect them with line segments. The probability that the resulting triangle will be isosceles is equal to:
(A) 1/3
(B) 2/5
(C) 3/5
(D) 4/7
(A) 1/3
(B) 2/5
(C) 3/5
(D) 4/7
Correct answer:
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Calculation of an isosceles triangle.
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Would you like to compute the count of combinations?
Calculation of an isosceles triangle.
See also our trigonometric triangle calculator.
Would you like to compute the count of combinations?
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