Is 5^k less than 1,000 ?
(1) 5^(k-1) > 3000
(2) 5^(k-1) = 5^k - 500
Exponents
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IMO D.
From (1)
5^(k-1)>3000
=>5^k>15000
From (2)
5^(k-1) = 5^k - 500
=> 5^k - 5^(k-1) = 500
=>5^(k-1) (5-1) = 500
=>5^(k-1)=125
=>5^k = 725
Looks a little weird after solving it. I might be missing something. Whats the OA?
From (1)
5^(k-1)>3000
=>5^k>15000
From (2)
5^(k-1) = 5^k - 500
=> 5^k - 5^(k-1) = 500
=>5^(k-1) (5-1) = 500
=>5^(k-1)=125
=>5^k = 725
Looks a little weird after solving it. I might be missing something. Whats the OA?
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I think the OA is [spoiler]B)[/spoiler] from the post below
Refer to https://www.beatthegmat.com/tough-one-og ... 16616.html
Refer to https://www.beatthegmat.com/tough-one-og ... 16616.html
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Cramya - I think the question mentioned in the link that you have provided is slightly different from the question being asked in this post.cramya wrote:I think the OA is [spoiler]B)[/spoiler] from the post below
Refer to https://www.beatthegmat.com/tough-one-og ... 16616.html
The question in ur link says
Is 5^k less than 1000?
(1) 5^k+1 > 3000
(2) 5^k-1 = 5^k-500
If you see the statement 1 here, its says 5^K+1 which is different from the question in this post which is 5^K-1.
Or, I am not sure if I am missing on anything!