 From: jena 20020531 01:20 pm (UTC)
Re: damn my Mensa brain.  (Link)

Purely mathematical. S had to be 5, because you have nine letters, therefore the puzzle will use the nine digits and no zero. V had to be 5 or less, but 5 is used by S, so V={1,2,4}. The tens column (I+I+R=5 or 15) already has 1 added into it from the ones column equaling 16, so it becomes I+I+R=4 or 14. It is impossible to solve it for 14, so it must be 4, thus I=1 and R=2. You are left with the letters H, E, V, and A, and the numbers 4, 7, 8, and 9. The only possibility for V is 4, because of the options, it is the only number that results in a single digit for the sum of T and V. The size of the remaining numbers implies that there will be 1 carried from the hundreds column to the thousands column, thus 1+3+4=8. All that is left is A, H, 7 and 9. If H were 7, A would have to be 6. However, if H were 9, A would be 7.
Q.E.D.
THIS + IS + VERY = EASY ==>
3915 + 15 + 4826 = 8756