Answer:
0. No
,
1. No
Explanation:
Part 1
Given the numbers 280 and 450. To determine if they are common divisors, we carry out the division below:

Since the second result does not give a whole number, 56 is not a common divisor of 280 and 450.
Part 2
Just as we did above, divide 578 and 714 by 57.

Since none of the results give a whole number, 57 is not a common divisor of 578 and 714.