chintzzz wrote:
If n is an integer, which of the following CANNOT be a factor of 3n+4?
A. 4
B. 5
C. 6
D. 7
E. 8
Another approach is to
plug in integer values for n and start ELIMINATING answer choices..
Try n = 0
So, 3n + 4 = 3(0) + 4 =
44 IS a factor of
4ELIMINATE A
Try n = 1
So, 3n + 4 = 3(1) + 4 =
77 IS a factor of
7ELIMINATE D
Try n = 2
So, 3n + 4 = 3(2) + 4 =
105 IS a factor of
10ELIMINATE B
Try n = 3
So, 3n + 4 = 3(3) + 4 =
13Doesn't help...
Try n = 4
So, 3n + 4 = 3(4) + 4 =
168 IS a factor of
16ELIMINATE E
By the
process of elimination, the correct answer is C
Cheers,
Brent
_________________
Brent Hanneson – GMATPrepNow.com
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68% (01:25) correct 
