JAMB Mathematics 2016 Objective — Question 28

Question 28 of 50 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2016 Objective paper, with the correct answer and a full explanation.

28. Evaluate (5.43×0.031)/(9×10⁻³×45×10⁻²×31×10⁻³) A. approximately 1.411×10¹ B. 1.4×10¹ C. 1.4×10² D. 1.41×10²

A. 1.411×10¹Correct
B. 1.4×10¹
C. 1.4×10²
D. 1.41×10²

Explanation

5.43×0.031 / (8×10⁻³×72×10⁻²×21×10⁻³) computes to (5.43×72×21)/(8×72×21)×10¹ = 1.411×10¹.

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