745 students have to be arranged in equal to the number of rows and columns to form a square. Find the number of rows/columns, if 16 students are left out after the arrangement.
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Solution
Number of students in the arrangement =745−16=729....(0.5 marks)
So, the number of rows will be equal to the square root of 729....(0.5 marks)
√729 = √27×27=27...(0.5 marks)
Hence number of rows = number of columns =27...(0.5 marks)