You'd think that integers is the easiest math topic, but I'm absolutely stumped as to why the correct answer is right. Maybe I'm interpreting the question wrong?
Is the integer x divisible by 6?
(1) x + 3 is divisible by 3
(2) x + 3 is an odd number.
Answer choices:
(a) Statement 1 alone is sufficient, but Statement 2 alone is not sufficient.
(b) Statement 2 alone is sufficient, but Statement 1 alone is not sufficient.
(c) Either statements are NOT sufficient, but BOTH together are sufficient.
(d) Each statement ALONE is sufficient.
(e) Neither statement Alone is sufficient.
Any one have any insights?[spoiler] Correct Answer: c [/spoiler]
GMATPrep Integers
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Statement 1
X+3 is divisible by 3
=> 3(X+3) + 0 where 0 is remainder
This is not sufficient
Statement 2:
X+3 is odd => 2K+1 format
Not enuf
Combine both
3(2K+1+3) +0
6k+12
which is divisible by 6 as 12/6 leaves raminder 0
So choice C
X+3 is divisible by 3
=> 3(X+3) + 0 where 0 is remainder
This is not sufficient
Statement 2:
X+3 is odd => 2K+1 format
Not enuf
Combine both
3(2K+1+3) +0
6k+12
which is divisible by 6 as 12/6 leaves raminder 0
So choice C
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I think it's a double post by mistake...
continue here: https://www.beatthegmat.com/gmatprep-int ... 22742.html
continue here: https://www.beatthegmat.com/gmatprep-int ... 22742.html
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Beginner's Guide to GMAT | Beating GMAT & beyond
Please do not PM me, (not active anymore) contact Eric.