Starting with the two two-digit numbers
ab and cd, where ab > cd,
concatenate them to obtain the
four-digit number abcd.
(note: each of the numbers: a,b,c,d are digits)
If you subtract the difference between
ab and cd from abcd, you obtain 5689.
Determine the number cd.
Last puzzle that I posted. There is no one solve it. I will post solution up this weekend...any suggestions ? and here is a little bit easier puzzle