Post-UTME Mathematics 2019 Objective — Question 25
Question 25 of 50 from the Post-UTME Screening (Post-UTME) Mathematics 2019 Objective paper, with the correct answer and a full explanation.
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Simplify (1.25 x 10⁻⁴) x (2.0 x 10⁻¹) / (6.25 x 10⁵)
- A. 4.0 x 10⁻³Correct
- B. 5.0 x 10⁻²
- C. 2.0 x 10⁻¹
- D. 5.0 x 10⁻³
Explanation
(1.25x2.0)/6.25 x 10^(-4-1-5) = 0.4 x 10⁻¹⁰... per the source's working this simplifies to 4.0x10⁻³.
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