One.
9
42
Just 1.
Because 9 divides evenly into 90 with no remainder.
Not evenly. It divides to 67.2 repeat.
9
9, 11, 3, 33,
One and five.
Yes, but 3 divides 54723 evenly and 9 does not divide 54723 evenly
The number that can divide evenly into 6 and 9 would be 3.
9
Yes, since 9 divides into 2529 evenly 281 times