perplexus.info :: Just Math : Perfect Square Digit

Perfect Square Digit (Posted on 2015-08-17)

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.

Submitted by K Sengupta

Rating: 5.0000 (1 votes)

Solution: (Hide)

Yes, the hundreds digit of N will always be even.
For an explanation, refer to the analytic solution submitted by Jer in this location.

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
Solution	Jer	2015-08-18 08:51:44
Can't find any under 10 billion	Charlie	2015-08-18 08:01:58

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