Always try to check out the latest competition books rather than referring the old ones. This is needed so that recent updates can be easily availed. The competition books undergo through different changes every year as per the latest competition updates and if you want to follow the trend, then you have to choose the current edition. Just as latest higher education books are favourable for studies likewise current competition books are quite important for those candidates who are interested in sitting for competitive examinations. Competitive books are quite supportive to competitive exams and thus only updated versions can help the candidates to take necessary preparations. If the preparations are not properly taken, then the candidates will not get the confidence in attending the exams.