JAMB Mathematics 1993 Question 7

Question 7

Logarithms

Solve without using tables log5(62.5) − log5(½)

  1. A.3
  2. B.4
  3. C.5
  4. D.8
Show the answer and explanation

Answer: A (3)

Explanation

Subtracting logs means dividing: 62.5 ÷ ½ = 125 = 53, so the value is log5125 = 3.