Puzzle A

1
Puzzle A
Puzzle B
2
I am a 2-digit number The difference between my
digits is 4 I am a multiple of 7 What am I?
3
Insert x or each time you see ?, so the
results of both the 4-number and 7-number
calculations are 12 when working one step at a
time from left to right (and no brackets allowed)
2 ? 4 ? 6 ? 8 12 1 ? 2 ? 3 ? 4 ?
5 ? 6 ? 7 12