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# If x is an integer and y = 3x + 2, which of the following CA

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Senior Manager
Joined: 22 May 2003
Posts: 306
Location: Uruguay
If x is an integer and y = 3x + 2, which of the following CA  [#permalink]

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27 Nov 2003, 18:54
1
12
00:00

Difficulty:

25% (medium)

Question Stats:

74% (00:58) correct 26% (01:02) wrong based on 548 sessions

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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

OPEN DISCUSSION OF THIS QUESTION IS HERE: if-x-is-an-integer-and-y-3x-2-which-of-the-following-110666.html
Director
Joined: 13 Nov 2003
Posts: 890
Location: Florida

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28 Nov 2003, 16:48
1
I tried putting in different values..

one more thing, as 2 and 3 are factors of 6 eq, 2x+3 or 3x+2 will not be divisible to 6, anytime, any value!!
Director
Joined: 14 Oct 2003
Posts: 565
Location: On Vacation at My Crawford, Texas Ranch

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28 Nov 2003, 22:59
1
2
Plugging in works best!

y = 3x+2

if x = 1 y=5 knock off 5
x=2 y=8 knock off 8
x=3 y=11
x=4 y=14 knock off 7
x=5 y=17
x=6 y=20 knock off 4

Left with c y=6
Intern
Joined: 02 Oct 2013
Posts: 12
Re: If x is an integer and y=3x+2 , which of the following  [#permalink]

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21 Oct 2013, 23:06
MartinMag 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

Hi Bunuel

Is there any other method to do this

Regards
Math Expert
Joined: 02 Sep 2009
Posts: 55802
Re: If x is an integer and y=3x+2 , which of the following  [#permalink]

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21 Oct 2013, 23:18
17
7
DivyanshuRohatgi wrote:
MartinMag 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

Hi Bunuel

Is there any other method to do this

Regards

y is not a multiple of 3, actually it's 2 more than a multiple of 3. Therefore, since y is not a multiple of 3 it cannot be a multiple of 6 either.

OPEN DISCUSSION OF THIS QUESTION IS HERE: if-x-is-an-integer-and-y-3x-2-which-of-the-following-110666.html
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Joined: 09 Sep 2013
Posts: 11439
Re: If x is an integer and y = 3x + 2, which of the following CA  [#permalink]

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27 Aug 2018, 04:42
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Re: If x is an integer and y = 3x + 2, which of the following CA   [#permalink] 27 Aug 2018, 04:42
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