Check whether 3 is a factor of 50.
Factors
A factor of a given number is a number that divides the given number exactly.
50=2×5×5
Since, 3 does not divide 50 exactly.
Hence, 3 is not a factor of 50.
Check whether 3 is a factor of 57
Check whether 3 is a factor of 72
Check whether 3 is a factor of 105.
Check whether 3 is a factor of 27
Check whether 7+3x is a factor of 3x3+7x.