WAEC Mathematics 1997 Question 2

Question 2

Logarithms

What is log10 (6.95 × 10−3)?

  1. A.0.8420
  2. B.3.8420
  3. C.3̄.8420
  4. D.3.9777
  5. E.3̄.9777
Show the answer and explanation

Answer: C (3̄.8420)

Explanation

log 6.95 = 0.8420 and the power 10−3 gives characteristic −3, so the log is 3̄.8420.