© 2014 Wiley India Pvt. Ltd. JEE Knockout Test Solution Exam Date : 30/03/2014 1. Time duration for this test is 180 minutes. This test consists of 90 questions. The maximum marks are 360. 2. There are three parts in the question paper, namely, Part A: Mathematics, Part B: Physics and Part C: Chemistry. Each question is awarded 4 (four) marks for correct response. 3. One-fourth (1/4) marks will be deducted for indicating incorrect response of each question. No deduction from the total score will be made if no response is indicated for an item in the answer sheet. 4. This test contains 90 Multiple Choice Questions with single correct answer. Each Question has four choices (1), (2), (3) & (4), out of which Only One is Correct. 5. Filling up more than one response in any question will be treated as wrong response and marks for wrong response will be deducted accordingly as per the instruction 3 above. Part A – Mathematics Question 1: Find the value of 15 15 15 15 2 3 4 15 2 3 14 . C C C C (1) 14 13(2 ) 1 (2) 13 × 2 15 (3) 13 × 2 14 (4) 13 × 2 14 1 Solution 15 15 15 15 2 3 4 15 1 2 3 ... 14 C C C C 15 15 1 ( 1) r r r C 15 15 15 15 1 1 r r r r r C C 15 14 15 1 1 15 (2 1) r r r C r = 15 × 2 14 2 15 + 1 = 13 × 2 14 + 1
