Is it implied in the rules that all the prizes used for the game will have four digits? If you remember that piano the other day, I think they had a $2000 bag, a $5000 bag, and a $7000 bag, so were there only two possibilities for the contestant to use (#1+#2 or #1+#3) or could #2+#3 have possibly been correct (despite the table display only having four digits)?