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If j and k are positive integers, is 6 a factor of j?

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If j and k are positive integers, is 6 a factor of j?  [#permalink]

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New post 28 Mar 2019, 00:14
2
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

41% (01:01) correct 59% (00:47) wrong based on 37 sessions

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If j and k are positive integers, is 6 a factor of j?

(1) 6 is a factor of jk.

(2) 6 is not a factor of k.

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Simple strategy:
“Once you’ve eliminated the impossible, whatever remains, however improbable, must be the truth.”

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If j and k are positive integers, is 6 a factor of j?  [#permalink]

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New post Updated on: 28 Mar 2019, 03:22
1
Learn from my mistakes: Try to catch why below reasoning is incorrect

1 stm - if j=6 k=6 the answer is yes. but if j=1 k=6 the answer is no - not suff
2 stm - nothing about j - not suff

1-2 stm together, if jk is divisible by 6 and k is not, then j must be divisible by 6 suff

IMO
Ans: C

Originally posted by LevanKhukhunashvili on 28 Mar 2019, 01:30.
Last edited by LevanKhukhunashvili on 28 Mar 2019, 03:22, edited 3 times in total.
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Re: If j and k are positive integers, is 6 a factor of j?  [#permalink]

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New post 28 Mar 2019, 02:58
LevanKhukhunashvili - Have you considered the case of j=2,k=3 ?
_________________
Thanks!
Do give some kudos.

Simple strategy:
“Once you’ve eliminated the impossible, whatever remains, however improbable, must be the truth.”

Want to improve your Score:
GMAT Ninja YouTube! Series 1| GMAT Ninja YouTube! Series 2 | How to Improve GMAT Quant from Q49 to a Perfect Q51 | Time management

My Notes:
Reading comprehension | Critical Reasoning | Absolute Phrases | Subjunctive Mood
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Joined: 13 Feb 2018
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GMAT 1: 640 Q48 V28
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Re: If j and k are positive integers, is 6 a factor of j?  [#permalink]

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New post 28 Mar 2019, 03:13
aragonn Ouch :) :(
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Re: If j and k are positive integers, is 6 a factor of j?   [#permalink] 28 Mar 2019, 03:13
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If j and k are positive integers, is 6 a factor of j?

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