9th Class Mathematics Probability Question Bank Probability

  • question_answer A coloured cube is cut into 64 equal cubes as shown alongside. What is the probability that a cube selected randomly has one face painted?

    A)  \[\frac{9}{16}\]                        

    B)  \[\frac{3}{16}\]

    C)  \[\frac{3}{8}\] 

    D)  \[\frac{2}{5}\]

    Correct Answer: C

    Solution :

    (c): No. of cubes having one face pointed \[=24=n\left( E \right)\] Total cubes \[=64=n\left( S \right)\] \[n\left( P \right)=\frac{24}{64}=\frac{3}{8}\]                 


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