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Read the data given below and answer the questions based on it. In the CBSE Board exams last year, 53% passed in Biology, 61% passed in English, 60% in Social Studies, 24% in Biology and English, 35% in English and Social studies, 27% in Biology and Social Studies, and 5% in none. If the number of students in the class is 200, how many passed in only one subject? Options are (a) 48 (b) 46 (c) More than 50 (d) Less than 40.

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A striker is shot from a square carom board from a point A exactly at midpoint of one of the walls with a speed of 2ms^-1 at an angle of 45^@ with the x-axis as shown in the figure. The collisions of the striker with the walls of the fixed carom are perfectly elastic. The coefficient of kinetic friction between the striker and board is 0.2 . The coordinate of the striker when it stops (taking point O to be origin) is (in SI units)