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  5. Factors and Multiples

4th Class Mathematics Factors and Multiples Question Bank Factors and Multiples

  • question_answer
    Find the sum of second common multiple and first common multiple of 4 and 5.

    A)  60                  

    B)    40                  

    C)  0                    

    D)    20

    Correct Answer: A

    Solution :

    Multiples of 4:4, 8, 12, 16, 20, 24, 28, 32, 36, 40... Multiples of 5:5, 10, 15, 20, 25, 30, 35, 40, 45, 50... The required sum \[=\text{ 4}0\text{ }+\text{ 2}0\text{ }=\text{ 6}0.\]


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