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

  • question_answer
    Directions: Find the lowest common multiple in the following questions. [15 and 18]

    A) 120                             

    B) 90       

    C) 100                             

    D) 110

    Correct Answer: B

    Solution :

    Prime factors of \[15=3\times 5\] Prime factors of \[18=2\times 3\times 3\] LCM of 15 and \[18=2\times 3\times 3\times 5=90\]    


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