Yes, that was the answer.
I forgot to mention that problems #1-4 have only one single solution.
Although in a problem like "ABCD * 4 = DCBA" you can write a VFP program to test through all the possibilities, and it might even find the solution quickly, the fun part, for a human, is to apply logic, and eliminate some possibilities (e.g., in Annabel, A = 4 is too high, because it gives a four-digit result; A = 1 would give repeated digits; this only leaves 2 or 3 for the first digit).
BTW, for those who have solved problem #2 (ABCD * 4 = DCBA), a similar problem with five digits should now be easy:
Problem #5
ABCDE
* 4
-----
EDCBA
Hilmar.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)
