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how to find 100!?
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In 2008 Olympics held at Beijing, Japan won 45 medals in atheletics, 15 in Judo and 28 in swimming/These medals were bagged by a total of 68 people and only three of them got medals in all the three events. Find the number of sports persons who received medals in exactly one event if there were 14 sports persons who had received medals in exactly two events.
A trader allows a discount of 10% on the marked price of an article. How much percentage above the cost price the article be marked to make a profit of 17%?