WAEC Mathematics 2019 Objective — Question 14
Question 14 of 145 from the West African Examinations Council (WAEC) Mathematics 2019 Objective paper, with the correct answer and a full explanation.
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14. Evaluate 0.42÷2.5, leaving the answer in standard form, given 0.5×2.05.
- A. 1.639×10²
- B. 1.639×10¹
- C. 1.639×10⁻¹Correct
- D. 1.639×10⁻²
Explanation
(0.42÷2.5)/(0.5×2.05) = 0.168/1.025 = 0.1639 = 1.639×10⁻¹.
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