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9th Class Mathematics Probability Question Bank Probability

  • question_answer
    Over a 70 days period David records the number of phone calls he receives. The graph of his data is shown alongside. The Possibility that on any day David will receive at least 3 phone calls.

    A) 0.453               

    B)  0.534

    C)  0.543              

    D)  0.435

    Correct Answer: B

    Solution :

    (b): \[n\left( E \right)=46\] \[n\left( S \right)=86\] \[n\left( P \right)=\frac{46}{86}=0.534\] 


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