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JAMB Mathematics 1983 Question 13

Question 13

Fractions, Decimals and Approximation

The value of (0.03)3 − (0.02)3 is

  1. A.0.019
  2. B.0.0019
  3. C.0.00019
  4. D.0.000019
  5. E.0.000035.
Show the answer and explanation

Answer: D (0.000019)

Explanation

0.03³ = 0.000027 and 0.02³ = 0.000008, so the difference is 0.000019.