JAMB Mathematics 1984 Question 3

Question 3

Fractions, Decimals and Approximation

0.0001432/1 940 000 = K × 10n where 1 ≤ K < 10 and n is a whole number. The values of K and n are

  1. A.7.381 and −11
  2. B.2.34 and 10
  3. C.3.871 and 2
  4. D.7.831 and −11
  5. E.5.41 and −2.
Show the answer and explanation

Answer: A (7.381 and −11)

Explanation

1.432 × 10⁻⁴ ÷ 1.94 × 10⁶ = 0.7381 × 10⁻¹⁰ = 7.381 × 10⁻¹¹.