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Q. Suppose there is a number 'n'. When 'n' is divided by 5, the remainder will be 2. What will be the remainder when n2 is divided by 5?
Explanation by: Praveen Singh
According to the question when 'n' is divided by 5, we will get the remainder 2 n/5 = remainder 2 On putting n =7, and on dividing it with 5 we will get remainder 2 So, n = 7, and n^2 = 49 (n^2)/5 = 49/5 = remainder 4
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