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Q. If books bought at prices from Rs. 150 to Rs. 300 are sold at prices ranging from Rs. 250 to Rs. 350. What is the greatest possible profit that might be made in selling 15 books ?
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Q. At what time between 2 PM and 3 PM the angle between minute hand and hour hand is 100°.
Q. The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero ?
Q. If x – √x = 90, then, find the value of √x
Q. A money-lender finds that due to a fall in the annual rate of interest 8% to 7¾% his yearly i...
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