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10th Class Mathematics Probability Question Bank Probability

  • question_answer
    Set {\[x:5\le \times \le 22,\times \] is an integer}. If an element from set P is picked at random, calculate the probability that it is a prime number.

    A)  \[\frac{5}{18}\]                        

    B)  \[\frac{1}{3}\]

    C)  \[\frac{7}{9}\]                         

    D)  \[\frac{5}{6}\]

    Correct Answer: B

    Solution :

    (b): Prime numbers, \[x:x\in [5,22]\] are 5, 7, 11, 13, 17, 19 = six total numbers = 18 \[\therefore \]      \[P=\frac{6}{18}=\frac{1}{3}\]


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