6.1. In a two-digit number $A$, the digits were swapped to obtain the number $B$. Find such an $A$ so that the sum $A+B$ is divisible by 17.
Answer: $A=89$ or $A=98$.

Solution: $A=89$ or $A=98$ will work. In both cases, $A+B=187=17 \cdot 11$.

Comment: Either of the two correct answers earns 7 points.