passwella.
Menu

WAEC Mathematics 1994 Question 25

Question 25

Logarithms

Solve the equation log8x − 4log8x = 2

  1. A.1/4
  2. B.1/2
  3. C.1
  4. D.2
  5. E.4
Show the answer and explanation

Answer: A (1/4)

Explanation

−3log8x = 2, so log8x = −2/3 and x = 8-2/3 = 1/4.