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    Question

    If ratio of interior exterior angle of a regular polygon

    is 2:3, then number of sides of the polygon is
    A 5 Correct Answer Incorrect Answer
    B 6 Correct Answer Incorrect Answer
    C 8 Correct Answer Incorrect Answer
    D 10 Correct Answer Incorrect Answer
    E 13 Correct Answer Incorrect Answer

    Solution

    The sum of the internal angles of a polygon is = 180deg;(nminus;2) Sum of exterior angle of a polygon is = 360deg; 360deg;/180deg;(nminus;2) = 2/3 n-2 = 3 n = 5

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