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Just to add some more to Bunuel's explanation, if a number is a multiple of 3, it will be in a form:
n = 3*k, where k is an integer
And if a number is a multiple of 6, it will be in a form :
m = 6*l, where l is an integer
so m = 2 * 3 * l = (2*l) * 3 = 3 * p, where p is an integer.
In other words, the prime factorization of m must have 3 as a factor, if it's a multiple of 6, but the expression can't have that (as explained by Bunuel), so it can't be a multiple of 6 either. _________________
Formula of Life -> Achievement/Potential = k * Happiness (where k is a constant)
Re: If x is an iteger and y=3x+2, which of the following CANNOT [#permalink]
08 Feb 2013, 05:19
3
This post received KUDOS
Stiv wrote:
I couldn't find the answer to this question. I would appreciate if someone explains it.
If x is an iteger and y=3x+2, which of the following CANNOT be a divisor of y? A) 4 B) 5 C) 6 D) 7 E) 8
Y=3x+2 means that y is not divisible by 3 thus y can not be divisible by any multiple of 3. Among answer choices only 6 is a multiple of 3 and hence the answer. C it is. _________________
Re: If x is an iteger and y=3x+2, which of the following CANNOT [#permalink]
08 Feb 2013, 05:23
Expert's post
Vips0000 wrote:
Stiv wrote:
I couldn't find the answer to this question. I would appreciate if someone explains it.
If x is an iteger and y=3x+2, which of the following CANNOT be a divisor of y? A) 4 B) 5 C) 6 D) 7 E) 8
Y=3x+2 means that y is not divisible by 3 thus y can not be divisible by any multiple of 3. Among answer choices only 6 is a multiple of 3 and hence the answer. C it is.
Re: If x is an iteger and y=3x+2, which of the following CANNOT [#permalink]
08 Feb 2013, 08:00
Stiv wrote:
I couldn't find the answer to this question. I would appreciate if someone explains it.
If x is an iteger and y=3x+2, which of the following CANNOT be a divisor of y? A) 4 B) 5 C) 6 D) 7 E) 8
y= 3x+2...that means y can not be divisible by 3 and further it also can't be divided by any multiple of 3....in the answer options 6 is the only multiple of 3...so the answer is 6...
Re: If x is an integer and y = 3x + 2, which of the following [#permalink]
19 Apr 2014, 22:26
The expression
y=3x+2
Signifies a Arithmetic progression series shown as below:
2,5,8,11,14,17,20,23,26,29,32,35
So clearly the answer option is (C) _________________
Rgds, TGC! _____________________________________________________________________ I Assisted You => KUDOS Please _____________________________________________________________________________
Re: If x is an integer and y = 3x + 2, which of the following [#permalink]
26 Nov 2015, 03:37
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