4th Class General Knowledge GK Based Reasoning Question Bank GK Based Reasoning

  • question_answer How many possible combinations of one pencil and one eraser from 3 pencils and 3 erasers can be formed?

    A)  10                   

    B)  9    

    C)  12                   

    D)  15

    Correct Answer: B

    Solution :

    [b] Pencil : (PI, P2 ,P3) and Eraser: (El, E2, E3) Possible combinations; (PI, El). (PI. E2). (PI. E3), (P2. El). (P2, E2), (P2. E3), (P3, El), (P3, E2), (P3, E3). or Three elements are in Pencil set and three elements are in eraser set.

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