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Perfect Square Digit (Posted on 2015-08-17) Difficulty: 3 of 5
The last two digits of a perfect square N, having at least 3 digits, is 09 (in this order).

Is the hundreds digit of N always even? Give reasons for your answer.

No Solution Yet Submitted by K Sengupta    
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  Subject Author Date
SolutionSolutionJer2015-08-18 08:51:44
Some ThoughtsCan't find any under 10 billionCharlie2015-08-18 08:01:58
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