From http://cemc.uwaterloo.ca/resources/potw/2012-13/POTWB-12-NN-01-P.pdf, used with permission.
I am a 5-digit number. My ones digit is 6 more than my tens digit. My tens digit is three less than my thousands digit. My hundreds digit is 3. My ten thousands digit is 3 times my tens digit.
What number could I be?