10th Class Mathematics Probability Question Bank Probability

  • question_answer
    Seven white balls and three black balls are randomly placed in a row. Find the probability that no two black balls are placed adjacent to each other.

    A)  \[\frac{7}{15}\]

    B)  \[\frac{2}{15}\]

    C)  \[\frac{3}{7}\]                         

    D)  \[\frac{2}{7}\]

    Correct Answer: A

    Solution :

    (a) When you put the 7 balls with a gap between them in a row, you will have 8 spaces.                     


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