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# GMAT CLUB TEST QUESTION

Author Message
Intern
Joined: 14 Sep 2010
Posts: 23

Kudos [?]: 65 [0], given: 0

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18 Jan 2011, 00:09
If x and y are positive integers, is the integer 10^x - y divisible by 9 ?
1. y is divisible by 3
2. 10^x + y is not divisible by 9

Kudos [?]: 65 [0], given: 0

Intern
Joined: 06 Dec 2010
Posts: 1

Kudos [?]: 5 [0], given: 1

Location: India
Concentration: Finance, Technology
GMAT 1: 640 Q49 V27
GPA: 3.9
WE: Analyst (Computer Software)
Re: GMAT CLUB TEST QUESTION [#permalink]

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20 Jan 2011, 01:42
I guess answer is A - Stmt 1 is sufficient to say its not divisible by 9..

For any x - 10^x leaves a reminder 1, and when y is multiple of 3 (could be 3,6,9..) the second part y/9 can never leave a reminder 1.

Pls correct me if am wrong.

Kudos [?]: 5 [0], given: 1

Re: GMAT CLUB TEST QUESTION   [#permalink] 20 Jan 2011, 01:42
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# GMAT CLUB TEST QUESTION

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