That is quant, basic 9th-10th level stuff.Maths is a subject that is universal & will give you much more flexibility in your future career options so unless you are very bad in it take it along with computer(for MBA/IIM maths is must for clearing CAT).
That's like saying "shakespere is just ABCD arranged in unusual manner" CAT exam is 2nd toughest exam in India(UPSC civil service is 1st one obviously) so even if its syllabus is 9th/10th level topics,the depth/understanding required will leave most B.Tech students behind.If someone can manage a good CAT score then getting 95% in Maths in 12th would be a piece of cake for such person.That is quant, basic 9th-10th level stuff.