A) 565101

B) 347068

C) 125908

a) 531881

b) 642091

c) 575601

Note: Since the numbers on the back are read with different vertical orientations depending on whether they appear as part of an answer for a question with a lowercase letter or an uppercase letter, they must be numbers that remain a number when rotated 180 degrees. For instance, the number 4 does not appear on the back because there is no number that looks like an upsidedown 4. The number 1 on the back should look like a 1 when rotated (so it should be written in a font where it looks just like a vertical line, without the serifs). And the 6's on the back should become 9's when rotated.