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  3. 9th Class
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  5. Cube and Dice

9th Class Mental Ability Cube and Dice Question Bank Cubes and Dice

  • question_answer
    Count the number of cubes in the figure given below.

    A)  80                               

    B)  87                               

    C)  89                               

    D)  90

    Correct Answer: C

    Solution :

     : In the figure, there are 9 columns containing 5 cubes each, 7 columns containing 4 cubes each, 5 columns containing 3 cubes each and 1 column containing 1 cube. \[\therefore \] Total number of cubes \[=\left( 9\times 5 \right)+\left( 7\times 4 \right)+\left( 5\times 3 \right)+\left( 1\times 1 \right)=89.\]


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