Which of the following integers is NOT a divisor of x if x = (21)(3^6) – (109)?
Select the correct option
A) 2	B) 5	C) 18	D) 19	E) 25
(21)(3^6) is divisible by 3 but 109 is not divisible by 3.   Therefore (21)(3^6) - 109 is not divisible by 3 and thus not divisible by 18.   The answer is 18.
<result>C</result>
Which of the following integers is NOT a divisor of x if x = (21)(3^6) – (109)?