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10th Class Mathematics Probability Question Bank Probability

  • question_answer
    A restaurant operator checked a sample of 200 plates and found that 10 of them were defective. The chef of the restaurant picks a plate from this sample. What is the probability that he will get a defective plate?

    A)  0.5                                        

    B)  0.05

    C)  0.2                        

    D)         20

    Correct Answer: B

    Solution :

     Since there are 200 plates, \[n(S)=200\]. Let B be the event of picking a defective plate. Then, \[n(B)=10\].        The probability of picking a defective plate \[=P(B)=\frac{n(B)}{n(S)}=\frac{10}{200}=0.05\]


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