I'm looking for a 4 digit square number where its first two digits are a square as are the last two.
What is its square root?
Incidentally, I'm not interested in the square of zero.
Sorry brianjn.
I've checked out all of the 4 digit numbers forwards from 1000 to 1680; and backwards from 9999 to 1682.
No answer yet and I have run out of time - I will try again later.