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# If n is a positive integer, what is the tens digit of n? (1)

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If n is a positive integer, what is the tens digit of n? (1) [#permalink]

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28 Dec 2005, 09:25
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, what is the tens digit of n?
(1) The hundreds digit of 10n is 6.
(2) The tens digit of n + 1 is 7.
Director
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28 Dec 2005, 09:35
We had this questions one-two weeks ago

1) The only digit that works is 6 so it's sufficient.

2) n can be 69 or 70-78, thus insufficient.

It's A
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28 Dec 2005, 19:03
We had this questions one-two weeks ago

1) The only digit that works is 6 so it's sufficient.

2) n can be 69 or 70-78, thus insufficient.

It's A

agree and tala lagao
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28 Dec 2005, 19:30
laxieqv wrote:
We had this questions one-two weeks ago

1) The only digit that works is 6 so it's sufficient.

2) n can be 69 or 70-78, thus insufficient.

It's A

agree and tala lagao

hike ...............

okie, nice to hear hindi words from you.
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28 Dec 2005, 19:36
We had this questions one-two weeks ago

1) The only digit that works is 6 so it's sufficient.

2) n can be 69 or 70-78, thus insufficient.

It's A

Concur!
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Don't be afraid to take a flying leap of faith.. If you risk nothing, than you gain nothing...

Director
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28 Dec 2005, 22:44
If n is a positive integer, what is the tens digit of n?
(1) The hundreds digit of 10n is 6.
(2) The tens digit of n + 1 is 7.
Guys please explain If n is a positive integer how come we know that it is 2 digits or 3 digits integer or maybe 1 digit integer?
(1) The hundreds digit of 10n is 6. why it cant be 3600 for example?
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