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If n>2 where n is an integer, what is the valu of n? 1.)

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If n>2 where n is an integer, what is the valu of n? 1.) [#permalink] New post 11 Jan 2010, 07:01
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If n>2 where n is an integer, what is the valu of n?

1.) The ten's digit of 11^n is 4
2.) The hundred's digit of 5^n is 6

Please suggest as to how do i solve it algrebriacally~~~~~!!!

OA
[Reveal] Spoiler:
E
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Joined: 30 Aug 2009
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Concentration: General Management
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Re: IF n > 2, where n is an integer..what is the value of n? [#permalink] New post 11 Jan 2010, 08:31
apoorvasrivastva wrote:
If n>2 where n is an integer, what is the valu of n?

1.) The ten's digit of 11^n is 4
2.) The hundred's digit of 5^n is 6

Please suggest as to how do i solve it algrebriacally~~~~~!!!


will give it a try

stmnt1 - n can be 4 14 24 etc. 11^1 = 1 =>11^2 = 121 =>11^3 = 3=> 11^4 will give ten's digit as 4
we can see that ten's digit in this case i.e. 11^n will be same as value of n. hence insuff
stmnt2 - n can be 4 6 8 10 12 14 16 18.hence insuff

even taking together "n" can have values 4 14 24 etc. so E
Re: IF n > 2, where n is an integer..what is the value of n?   [#permalink] 11 Jan 2010, 08:31
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If n>2 where n is an integer, what is the valu of n? 1.)

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