3. (2 points) Among the numbers from 1 to 56000 - which are there more of - those that are divisible by 7 but not by 8, or those that are divisible by 8?
Answer: The same.

Solution: Since 56000 is divisible by 8, among the numbers of interest, every eighth number is divisible by 8.

Since 56000 is divisible by 7, among the numbers of interest, every seventh number is divisible by 7. The number of these numbers is divisible by 8, meaning exactly $\frac{7}{8}$ of them are not divisible by 8. This constitutes $\frac{7}{8} \cdot \frac{1}{7}=\frac{1}{8}$ of the total number.

Thus, the numbers that are divisible by 7 but not by 8, and the numbers that are divisible by 8, are equal in quantity.