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9th Class Mathematics Probability Question Bank Probability

  • question_answer
    A wheel with sectors numbered 1 to 24 is spin once as shown alongside. What is the possibility that the number is a composite number?

    A)  \[\frac{1}{2}\]                         

    B)  \[\frac{7}{12}\]           

    C)  \[\frac{1}{4}\]                         

    D)  \[\frac{1}{6}\]

    Correct Answer: B

    Solution :

    (b): \[n\left( E \right)=\left\{ 4,6,8,9,10,12,14,15,16,18,20,21,22,24 \right\}\]  \[n\left( S \right)=\left\{ 1,2,3,.........24 \right\}\] \[n\left( P \right)=\frac{14}{24}=\frac{7}{12}\]


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