Mathematics for IGCSE & O level - Limits Of Accuracy (Section 3 - No. 16)
Find the upper bound of the difference between 28.7 seconds and 31.4 seconds (both to 3 significant figures).
2.6 s
2.7 s
2.75 s
2.8 s
Explanation
28.75-31.35= 2.6, meaning the result is 2.7s (To 1 d.p)
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