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# If N is a positive integer, is 10^n - 1 divisible by q? 1. Q

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CEO
Joined: 21 Jan 2007
Posts: 2734

Kudos [?]: 1076 [0], given: 4

Location: New York City
If N is a positive integer, is 10^n - 1 divisible by q? 1. Q [#permalink]

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21 Nov 2007, 03:04
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

If N is a positive integer, is 10^n - 1 divisible by q?

1. Q is not divisible by either 5 or 2
2. Q is not divisible by 9

Kudos [?]: 1076 [0], given: 4

Intern
Joined: 25 Aug 2007
Posts: 5

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

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21 Nov 2007, 03:31
Take some numbers: N=2 Q=11 (yes), Q=3 (no). All numbers satisfy both conditions - probably, the right answer is E

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

Manager
Joined: 08 Nov 2007
Posts: 97

Kudos [?]: 3 [0], given: 0

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21 Nov 2007, 03:35
In any case q could be 1 - in which case the answer will always be yes regardless of N...

Kudos [?]: 3 [0], given: 0

21 Nov 2007, 03:35
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# If N is a positive integer, is 10^n - 1 divisible by q? 1. Q

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