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641.The radius of a circle is increased by 1%. If the original value of radius is 10, the percentage increase in the area of circle is?
642.If the price of sharpeners reduces by 20%, a girl can purchase 3 more sharpeners in a dollar. The number of sharpeners that can be purchased in five dollars is?
643.In a race, Pervaiz is ahead of Ghazi but behind Omar. Omar and Yasir are running side by side. Pervaiz is behind Bilal. Who is at the second place in the race?
644.A bus for Multan leaves every thirty minutes from a bus stand. An enquiry clerk told a passenger that the bus had already left ten minutes ago and the next bus will leave at 10:45 AM. At what time did the enquiry clerk give this information to the passenger?
645.Pointing to a gentleman, Dayyan said "His only brother is the father of my daughter's father." How is the gentleman related to Dayyan?
646.If the arithmetic mean of 7, 5, 13, x and 9 is 10, the value of x is?
647.Choose which pair of numbers come next in the sequence 16, 26, 56, 36, 46, 68, 56, ?
648.The pair of numbers that does not belong to the group for lack of common property? 18, 45 27, 36 29, 82 14, 23
649.The wheel of a car is of diameter 70 cm. The number of revolutions per minute must the wheel make so as to keep a speed of 66 km/hour will be?
650.In the Mathematics department of a certain university, the student teacher ratio was 20:1. It was decided to increase the number of students and teachers by 50% and 10% respectively. The new student to teacher ratio is?