The solution to the problem is as follows:
200 - 299 = 100 numbers
120 - 129 = 10 numbers and 320 - 329 = 10 numbers
1x2 but *not* 122 (we already counted it) = 9 numbers
3x2 but *not* 322 (already counted) = 9 numbers
100 + 10 + 10 + 9 + 9 = 138 numbers
I hope my answer has come to your help. God bless and have a nice day ahead!
