9th Class Mathematics Probability Question Bank Probability

  • question_answer The marks obtained by 273 examiners shown by the frequency polygon given below. The possibility of a student selected randomly gets more than 80% marks is

    A)  0.123              

    B)  0.112  

    C)  0.113              

    D)  0.117

    Correct Answer: D

    Solution :

    (d): Number of students whose marks is more than \[80%=32\] Total students = 273 \[n(E)\frac{32}{273}=0.117\]

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