Hindi, asked by shivanisree13, 2 months ago

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Answered by 28aliza
43

Number of 3 digit number div by 9 = ((999-108)/2)+1=100. Even 3 digit number div by 9 = 100/2 = 50. For n and n^2 to leave the same remainder, the even number must end with 0 or 6. Multiples of 9 - 18,36,54,72,90.

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