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JAMB Mathematics 2011 Question 7

Question 7

Logarithms

If log318 + log33 − log3x = 3, find x.

  1. A.1
  2. B.2
  3. C.0
  4. D.3
Show the answer and explanation

Answer: B (2)

Explanation

log3(54/x) = 3, so 54/x = 27 and x = 2.