Multiple Choice Questions on The number of sides of a regular polygon whose interior angles are 156o each is ........ for RRB(NTPC) Exam Preparation

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Multiple Choice Questions

The number of sides of a regular polygon whose interior angles are 156o each is ........

Quantitative Aptitude (RRB NTPC) Mensuration 2D
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    The number of sides of a regular polygon whose interior angles are 156o each is :

    14

    Incorrect Answer

    16

    Incorrect Answer

    15

    Incorrect Answer

    17

    Correct Answer
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    Explanation:
    Sum of interior angles of a regular
    polygon with n sides =(n-2)x180o
    Value of one interior angle
    =(n-2)*180/n=156o
    180o x n - 360o=156o n
    24n=360o
    Number of sides
    n=360/24=15

    By: Barka Mirza
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