Hi to everyone.
I am glad to announce that I am going to put an A++ mark on your end-course Maths qualification if you find an integer verifying to be a perfect square ending in "7".
If not... ...I will have enough if it finishes in "8" instead of "7"!
Still no luck? well, perhaps you should try with "2" or "3"!.
By the way... ...Why am I so sure that none of you are going to be able to find perfect squares ending with 2, 3, 7 or 8?
(Of course, it's impossible, if you don't believe me, just keep on searching... ...and get bored! ;D)
If someone explains it fine... ...I will consider for a good mark. (This time is no joke).
Send me an e-mail before posting anything. If someone posts a right answer directly, following ones won't have the opportunity to do the same.
Good luck and think a bit.
RAFA.
