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JAMB Mathematics 2014 Question 6

Question 6

Logarithms

If log 7.5 = 0.8751, evaluate 2 log 75 + log 750.

  1. A.66.253
  2. B.6.6252
  3. C.6.6253
  4. D.66.252
Show the answer and explanation

Answer: C (6.6253)

Explanation

log 75 = 1.8751 and log 750 = 2.8751. So 2(1.8751) + 2.8751 = 3.7502 + 2.8751 = 6.6253.