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9th Class Mathematics Probability Question Bank Probability

  • question_answer
    A game of chance consists of spinning an arrow which comes to rest pointing at one of the numbers. 1, 2, 3, _ _ _ _ ,12 as shown alongside and these are equally outcomes what is the probability that it will point a perfect square?

    A)  \[\frac{1}{3}\]                         

    B)  \[\frac{1}{4}\] 

    C)  \[\frac{1}{5}\]                         

    D)  \[\frac{1}{6}\]

    Correct Answer: B

    Solution :

    (b) \[:n\left( E \right)=\left\{ l,4,9 \right\}~n\left( S \right)=\left\{ 1,\text{ }2,\text{ }3,........12 \right\}\] \[n(P)=\frac{3}{12}=\frac{1}{4}\]           


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