IIT JEE Advanced 2007 Paper 1

Paragraph Type
This section contains 2 paragraphs. Based on each paragraph, there are 3 questions. Each question has 4 choices (A), (B), (C) and (D) out of which ONLY ONE is correct.
Paragraph for Question 58–60:
Let Vr done the sum of the first r terms of an arithmetic progression (A.P.) whose first term is r and the common difference is (2r – 1). Let
Tr = Vr+1−Vr−2 and Qr = Tr+1−Tr for r = 1 , 2 , ...