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VIBGYOR HIGH First Term Examination 2020-2021 MATHEMATICS Grade: X Max. Marks : 80 Date : 24/09/2020 Time Allowed : 2 hours INSTRUCTIONS: Answers 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. The time given at the head of this paper is the time allowed for writing the answers. Attempt all questions from Section A and any four question from Section B The intended marks for the questions or parts of questions are given alongside the questions. 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 the loss of marks. Geometrical figures to be constructed wherever applicable. For geometry, figures are to be copied to the answer script. _________________________________________________________________________ SECTION A (40 marks) (Attempt all questions) Q.1 a) a b Find the third proportion to and b a b) How many terms of the A.P. 27, 24, 21 should be taken so that their sum is a 2 b2 . zero? c) [3] [3] 5 0 1 If Matrix A , B= and 3A M = 2B; 6 4 3 i) Write the order of matrix M ii) Find matrix M [4] 1
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