1)Teachers arranging students in equal number of rows and columns found that 11 were left out. If there are 2220 students in the school, find the number of rows or columns that students were standing in.
2)Find the least number to be added to 3441 to make it a perfect square. Also. Find the perfect square and the square root of the perfect square number so obtained.
3)Find the least number that must be subtracted from 65659 to make it a perfect square. Find the square number so obtained. Also find the square root of the perfect square.
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you can solve all this by this method
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