This is an era of competition.Whatever you want to achieve can be done but you have to face the competition and come out as winner.Then only you will be able to fulfill your dreams.Lacs of students appear for competitive exams every weekend or so but only a handful of them qualify.Now you might be asking yourself that, are these a few handful of guys more intelligent than the others.The answer is No.Their secret of success lies in their ability to compute fast.As maths forms an important part...
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