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A student found the approximate value of 0.02548 correct to two places of decimal instead...

Mathematics
WAEC 1997

A student found the approximate value of 0.02548 correct to two places of decimal instead of two significant figures. Find the percentage error.

  • A. 0%
  • B. 131/3%
  • C. 15 5/13%
  • D. 2/3%
  • E. 20%
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Correct Answer: Option E
Explanation

0.02548 \(\approxeq\) 0.03 (to 2 decimal places)

0.02548 \(\approxeq\) 0.025 (2 sig. figs)

Error = 0.03 - 0.025

= 0.005

% error = \(\frac{0.005}{0.025} \times 100%\)

= 20%

 


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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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