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MATHEMATICS 10th ICSE 2011 (Two hours and a half) Instructions Attempt all questions from Section A and any four questions from Section B. All working, including rough work, must be clearly shown and must be done on the same sheet as the rest of the answer. Omission of essential working will result in loss of marks. The intended marks for questions or parts of questions are given in brackets [ ]. Mathematical tables are provided. Section A (40 Marks) Attempt all questions from this Section. 1. (a) Find the value of k if (x 2) is a factor of x3+2x2 kx+10 Hence determine whether (x+5) is also a factor. [3] (b) 3 If A= 4 5 2 and B= , is the product AB possible? Give a reason. If yes, find AB.[3] 2 4 (c) Mr. Kumar borrowed Rs. 15,000 for two years. The rate of interest for the two successive years are 8% and 10% respectively. If he repays Rs. 6,200 at the end of the first year, find the outstanding amount at the end of the second year. Sol: (a) f(x) = x3+2x2 kx+10 [4]

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