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Updated on: 04 Oct 2017, 04:29
Originally posted by siddharthvaid on 25 Aug 2011, 13:34.
Last edited by Bunuel on 04 Oct 2017, 04:29, edited 3 times in total.
Last edited by Bunuel on 04 Oct 2017, 04:29, edited 3 times in total.
EDITED THE QUESTION.
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B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
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What is the value of \(11^x-11^{(x+2)}\), where x is the largest integer such that \(11^x\) is a factor of 30,030?
A. -1331
B. -1320
C. -121
D. -120
E. -1
A. -1331
B. -1320
C. -121
D. -120
E. -1
12 Jul 2012, 01:55
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The question should read:
What is the value of \(11^x-11^{(x+2)}\), where x is the largest integer such that \(11^x\) is a factor of 30,030?
A. -1331
B. -1320
C. -121
D. -120
E. -1
Given that \(11^x\) is a factor of \(30,030=2*3*5*7*11*13\). Since \(x\) is an integer then \(x=1\).
\(11^x-11^{x+2}=11-11^3=11(1-11^2)=-11*120=-1320\).
Answer: B.
What is the value of \(11^x-11^{(x+2)}\), where x is the largest integer such that \(11^x\) is a factor of 30,030?
A. -1331
B. -1320
C. -121
D. -120
E. -1
Given that \(11^x\) is a factor of \(30,030=2*3*5*7*11*13\). Since \(x\) is an integer then \(x=1\).
\(11^x-11^{x+2}=11-11^3=11(1-11^2)=-11*120=-1320\).
Answer: B.
General Discussion
13 Jul 2012, 09:32
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11^x - 11^(x+2 ) = 11^x(1-121)
=> 11^x (-120)
given 11^x is a factor of 30030.
the only option which satisfies is -1320 (11 * -120 =-1320)
=> 11^x (-120)
given 11^x is a factor of 30030.
the only option which satisfies is -1320 (11 * -120 =-1320)
