10th Class Mathematics Probability Question Bank MCQs - Probability

  • question_answer
    The probability of selecting a rotten apple randomly from a heap of 900 apples is \[0.\text{18}\]. What is the number of rotten apples in the heap? (CBSE 2017)

    A) 152

    B) 155

    C) 162

    D) 173

    Correct Answer: C

    Solution :

    [c] Probability of selecting a rotten apple
    \[=\frac{\text{Number of rotten apples}}{\text{Total number of apples}}\]
    \[\Rightarrow \,\,\,\,\,\,\,\,\,\,\,\,0.18=\frac{\text{Number of rotten apples}}{900}\]
    \[\therefore \]   Number of rotten apples
    \[=900\times 0.18=162\]


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