For how many integers n is n 20 n the square of an integer

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Previous Question: Q. There are two containers out of which one contains exactly 16 liters of water and the other contains exactly 9 liters of water. There is no measuring mark on the containers. Using only the two containers determine how to bring 6 liters of water from a pond Next Question: Consider a 20 sided convex polygon K, with vertices A1, A2.....A20 in that order.Find the No. of ways in which three sides of K can be chosen so that every pair among them has at least two sides of K between them.(For example(A1A2,A4A5, A11A12) is an admissible triplet while A!A@,A4A5,A19A20)is not)

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For how many integers n is n/(20-n) the square of an integer?: Asked In Maths Olympiad Sanjana Patnaik (13 years ago); Solved; Is this Puzzle helpful? (0) (1) Submit Your Solution

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I have often admired the mystical way of Pythagoras, and the secret magic of numbers.

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Latest Maths Olympiad Aptitude Question SOLUTION: For how many integers n is n/(20-n) the square of an integer?