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What is the different between 0.007685 correct to three significant figures and 0.007685 correct to...

Mathematics
JAMB 1989
What is the different between 0.007685 correct to three significant figures and 0.007685 correct to four places of decimal?
  • A. 10-5
  • B. 7 x 10-4
  • C. 8 x 10-5
  • D. 10-6
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Correct Answer: Option A
Explanation
0.007685 = 0.00769 (three significant figures)

0.007685 = 0.0077(4d.p)

the difference = 0.0077 - 0.00769

= 0.00001

= 1.0 x 10-5
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