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  3. 8th Class
  4. Mathematics

8th Class Mathematics Sample Paper Mathematics Sample Paper - 2

  • question_answer
    Show that 500 is not a perfect square.

    Answer:

    Prime factorisation of 500 is
    2 500
    2 250
    5 125
    5 25
    5 5
    1
    \[500=2\times 2\times 5\times 5\times 5\]                            
    The prime factor 5 does not occur in pair. Therefore, 500 is not a perfect square.


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