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9th Class Mathematics Probability Question Bank Probability

  • question_answer
    Alexander records the number of phone calls he receives over a period of consecutive days. What is the probability that on a particular day Alexander will receive 5 or more phone calls?

    A) \[0.\overline{5}\]                       

    B)  \[0.\overline{4}\]             

    C)  \[0.\overline{3}\]                                  

    D)  \[0.\overline{2}\]

    Correct Answer: D

    Solution :

    (d): \[n\left( E \right)=20,n\left( S \right)=90\] \[n\left( P \right)=\frac{20}{90}=\frac{2}{9}=0.222....=0.\overline{2}\]


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