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# If n is a positive integer, what is the remainder when

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Intern
Joined: 08 Nov 2008
Posts: 29
If n is a positive integer, what is the remainder when  [#permalink]

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11 Nov 2008, 20:26
If n is a positive integer, what is the remainder when 3^8n+3 + 2 is divided by 5?

A. 0
B. 1
C. 2
D. 3
E. 4

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Director
Joined: 14 Aug 2007
Posts: 692

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11 Nov 2008, 20:48
1
petercao wrote:
If n is a positive integer, what is the remainder when 3^8n+3 + 2 is divided by 5?

A. 0
B. 1
C. 2
D. 3
E. 4

E. 4

The units digit of 3^8n+3 will be 7.

xx7+ 2 = xx9 = 9/5=4

--== Message from GMAT Club Team ==--

This is not a quality discussion. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

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Re: integer--27 &nbs [#permalink] 11 Nov 2008, 20:48
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# If n is a positive integer, what is the remainder when

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