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CENTRAL MODERN SCHOOL Pre-Board Examination for ICSE - 2021 MATHEMATICS Class -X F.M. 8 0 Time 2 hrs. 30 min. [Answer to this paper must be written on the paper provided separately. You will not be allowed to write during the first 15 minutes. This time is to be spent in reading the question paper. Attempt all questions from Section-A and any four questions from SectionB. All working including rough work must be clearly shown and must be done on the same sheet as the rest of the answers. The intended marks for questions or parts of questions are given in brackets [] [10X4=40] SECTION-A 1. a) If x 4V6 =2 + b) b) IfA = Xt2/2 find the value of x-2 2 B C . x+23 x-2 3 [ _ and 5A +2B = C find the values of a, b, c. c) c) AB is a diameter of the circle with centre O and CD|| BA. If LCAB=24 find the value of: i) 2COBii) 2DOC ii) 2DAC iv) ADC [3+3+4=10] D 24 A 2. a) The sum of the first 3 terms of an A.P is 33. If the product of the first and the third terms exceeds the second term by 29, find the A.P b) Solve c) 2a+b+2x L+2+ 2x 2a A girl of height 90cm is walking away from the base of a lamp post at a speed of 1.2 m/sec. f the lamp is 3.6m above the ground, find the length of her shadow after 4 seconds. [3+3+410] 3. a) A shopkeeper buys an article whose list price is Rs. 4500 at some rate of discount from a wnolesaler. He sells the article to a Page 1 of 4
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