Find the least number which must be subtracted from 2040to
make it a perfect square
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5
15 is subtracted to make a square of 45 is 2025
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√2025=45
46×46=2116. which is greater than 2040
so we should subtract 15 from 2040 to get perfect sqaure number which is 2025
46×46=2116. which is greater than 2040
so we should subtract 15 from 2040 to get perfect sqaure number which is 2025
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