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KENDRIYA VIDYALAYA SANGTHAN KOLKATA REGION PRE-BOARD EXAMINATION 2020-21 CLASS: - X SUBJECT:- MATHEMATICS TIME:-3HOURS FM:- 80 This question paper consists of 11 pages General Instructions: 1. This question paper contains two parts A and B. 2. Both Part A and Part B have internal choices. Part A: 1. It consists three sections I and II 2. Section I has 16 questions of 1 mark each. Internal choice is provided in 5 questions. 3. Section II has 4 questions on case study. Each case study has 5 case-based sub-parts. An examinee is to attempt any 4 out of 5 sub-parts. Part B: 1. Question No. 21 to 26 are very short answer type questions of e marks each. 2. Questions No. 27 to 33 are Short Answer Type questions of 3 marks each. 3. Question No. 34 to 36 are Long Answer Type questions of 5 marks each. 4. Internal choice is provided in 2 questions of 2 marks, 2 questions of 3 marks and 1 question of 5 marks. Q. No. Part A Marks allocated Section 1 Section I has 16 questions of 1 mark each. Internal choice is provided in 5 questions. 1. Calculate the HCF and LCM of 33 5 and 32 52 . 1 1
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