1, 3, 7, 9, 21, 63
The greatest common factor is 63
The highest common factor of 81 and 63 is 9
The highest common factor of both numbers is 9
7 since 7 goes into 63 and 140 evenly and 7 is a prime.
Yes, 21 is a factor of 63. 63 = 3x21
No; 3 is a factor of 63.
No, 9 is a factor of 63.
63 has a square factor, but no equal ones.
63 is.
7, what's the highest number that goes evenly into 63 and 70. There aren't that many... :D
Yes, 7 is a factor of 63. The factors of 63 are 1, 3, 7, 9, 21, and 63.
No, 6 is not a factor of 63 because it does not go in evenly.