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Hi Bill .. thanks ... this was also my thinking and also the explanation in the OG guide. Was interested to see if people used alternative approaches in arriving to the answer on this one.BILL wrote:If y=3x+2...we know that y is not divisible by 3 because 3x will always be divisible by 3. So if you add +2, the resulting number will be 5,8,11, etc, never divisible by 3. Since we know that if a number is not divisible by 3 then its not divisible by 6, thats your answer
We are given the following:II wrote:If x is an integer and y=3x+2, which of the following CANNOT be a divisor of y?
A) 4
B) 5
C) 6
D) 7
E) 8
Rule:Farjin wrote:If x is an integer and y=3x+2, which of the following CANNOT be a divisor of y?
A) 4
B) 5
C) 6
D) 7
E) 8
GMATGuruNY wrote:Rule:Farjin wrote:If x is an integer and y=3x+2, which of the following CANNOT be a divisor of y?
A) 4
B) 5
C) 6
D) 7
E) 8
MULTIPLE OF K + MULTIPLE OF K = MULTIPLE OF K
MULTIPLE OF K + NON-MULTIPLE OF K = NON-MULTIPLE OF K
y = 3x + 2 = MULTIPLE OF 3 + NON-MULTIPLE OF 3 = NON-MULTIPLE OF 3.
Since y is not a multiple of 3, it cannot be a multiple of 6.
The correct answer is C.
