Susmit,
you have to join some other persons in m4maths.com to obtain bonus points
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"Send refrel Url to your friends email."
Write email address of yours friend in this box, if he/ she joins m4maths by yours reference, 1 bonus point will be counted in yours account automatically. After getting a target of 50, you will receive a gift from m4maths.
Question of 5.2.2010 is "The difference of cube and square of a real number is equal to the difference of its square and itself. Total number of such real numbers are."
if it would be "The modulus of difference of cube and square of a real number is equal to the modulus of difference of its square and itself. Total number of such real numbers are" then yours logic would be valid