9th Class Mathematics Probability Question Bank Probability

  • question_answer
    Jayesh does a lot of travelling in his car. So he records how often he fills his car with CNG. The table alongside shows the frequencies of the number of days between refills. The possibility that between there is a gap of at least 5 days?
    Day between refills Frequency
    1 36
    2 80
    3 41
    4 17
    5 15
    6 11

    A)  0.08

    B)  0.18            

    C)  0.108                          

    D)  0.082

    Correct Answer: A

    Solution :

    (a): \[n\left( E \right)=16,n\left( S \right)=200\] \[n\left( P \right)=\frac{16}{200}=0.08\]                         


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