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Mensa No. 50
A frog sits on a lily pad in the precise middle of a circular pond with a radius of 6 meters (19 feet). He jumps straight toward the edge of the pond a distance of 3 meters (9 feet, 6 inches), but this tires him and every subsequent jump is precisely half the distance of the jump before (i.e., 1.5 meters (4 feet, 9 inches), 75 cm (2 feet, 4.5 inches), etc.).
How many jumps does it take him to reach the edge of the pond?