2. Questions Bank
  3. 9th Class
  4. Mathematics
  5. Probability

9th Class Mathematics Probability Question Bank Probability

  • question_answer
    A dental survey of 400 students in a w school revealed that 80 of them had two or more cavities. If the total school enrolment is 1500, about how many students would you expect to have two or more cavities?

    A)  300                                       

    B)         800                       

    C)         500                                       

    D)         600

    Correct Answer: A

    Solution :

    Number of students having two or more cavities \[=\frac{80}{400}\times 1500=300\]


You need to login to perform this action.
You will be redirected in 3 sec spinner