5th Class Mathematics Number System and its Operations Question Bank Number System

  • question_answer
    Directions: Find the lowest common multiple in the following questions. [8, 12 and 20]

    A) 120         

    B) 140           

    C) 150                             

    D) 175

    Correct Answer: A

    Solution :

    Prime factors of \[8=2\times 2\times 2\] Prime factors of \[12=2\times 2\times 3\] Prime factors of \[20=2\times 2\times 5\] LCM of 8, 12 and \[20=2\times 2\times 2\times 3\times 5=120\]                  


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