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WAEC Mathematics 1988 Question 33

Question 33

Logarithms

If log10a = 4; what is a?

  1. A.0.4
  2. B.40
  3. C.400
  4. D.1000
  5. E.10,000.
Show the answer and explanation

Answer: E (10,000.)

Explanation

log10a = 4 means a = 104 = 10,000.