WAEC Mathematics 2019 Objective — Question 2
Question 2 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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2. Evaluate (0.064)⁻¹ᐟ³.
- A. 5/2Correct
- B. 2/5
- C. -2/5
- D. -5/2
Explanation
(0.064)⁻¹ᐟ³ = (64/1000)⁻¹ᐟ³ = (1000/64)¹ᐟ³ = ³√(1000/64) = 10/4 = 5/2 (using (a/b)⁻¹=b/a).
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