9 and 11.
4 and 11.
30, 60, and 90.
A factor multiplies with another factor to create a product.
4 and 9
It multiplies to 45
Yes
45 = 1 x 45, 3 x 15, 5 x 9
63
57
-1805
-31
-49
5 & 9. 5 + 9 = 14... 5 x 9 = 45.
-41
-43
9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99 . . .