I had the other day in my possession a label
bearing the number 3 0 2 5 in large figures.

This got accidentally torn
in half, so that 3 0 was on one piece and 2 5 on the other, as shown on
the illustration.

On looking at these pieces I began to make a
calculation, scarcely conscious of what I was doing, when I discovered
this little peculiarity.

If we add the 3 and the 2 5 together and
square the sum we get as the result the complete original number on the
label!

Thus, 30 added to 25 is 55, and 55 multiplied by 55 is 3025.
Curious, is it not?

Now, the puzzle is to find another number, composed
of four figures, all different, which may be divided in the middle and
produce the same result.