1."Some new people have moved in down the road," said Greg. "Have you seen them?" Judy shook her head. "No, do you know their house number?" "A good question, and as a matter of fact I do," Greg replied. "The same two digits as ours, but ours is one less than three times theirs." Well?

House numbers 16 and 61

House numbers 14 and 41

House numbers 13 and 31