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If log318 + log33 - log3x = 3, Find x.

Mathematics
JAMB 2011

If log318 + log33 - log3x = 3, Find x.
  • A. 1
  • B. 2
  • C. o
  • D. 3
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Correct Answer: Option B
Explanation
log\(_{3}^{18}\) + log\(_{3}^{3}\) - log\(_{3}^{x}\) = 3

log\(_{3}^{18}\) + log\(_{3}^{3}\) - log\(_{3}^{x}\) = 3log33

log\(_{3}^{18}\) + log\(_{3}^{3}\) - log\(_{3}^{x}\) = log333

log3(\(\frac{18 \times 3}{X}\)) = log333

\(\frac{18 \times 3}{X}\) = 33

18 x 3 = 27 x X

x = \(\frac{18 \times 3}{27}\)

= 2

There is an explanation video available below.


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Explanation Video

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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 127076
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 127076
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