54, 108, 162 and so on.
2.
9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99 . . .
61
Anything that isn't 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99 and so on.
9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99.
2.
The numbers are 8 and -54 Check: 8+(-54) = -46 and 8*-54 = -432
33
54
3024
-69
1, 2, 3, 6, 9, 18, 27, 54 (1 x 54, 2 x 27, 3 x 18, 6 x 9).
9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99 . . .
61
Anything that isn't 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99 and so on.
9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99.
9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99