Answer: The answer is 606 and 612.
Step-by-step explanation: Given that Carter lives on a street where all the house numbers are multiples of 6. We are given to name any two possible house numbers between 601 and 650.
The numbers lying between 601 and 650 are
602, 603, 604, 605, . . . ,648, 649.
And the numbers among these which are multiples of 6 are
606, 612, 618, 624, 630, 636, 642, 648.
So, any two of these eight numbers can be possible.
Thus, the numbers are 606 and 650.