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9th Class Mathematics Probability Question Bank Probability

  • question_answer
    Different choices made by a group of 200 students are given below. On the basis of given data, what is the possibility that a randomly selected student who has neither taken science nor commerce?
    Streams No. of students
    Science 62
    Arts 58
    Commerce 58
    Home Science 12
    Other 10

    A)  0.33                            

    B)  0.51    

    C)  0.42                            

    D)  0.40

    Correct Answer: D

    Solution :

    (d): Number of students who have neither science nor commerce \[=80=n\left( E \right)\] Total students \[=200=n\left( S \right)\] \[n(P)=\frac{n(E)}{n(S)}=\frac{80}{200}=0.4\]


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