Mathematics for IGCSE & O level - Limits Of Accuracy (Section 3 - No. 9)

What is the lower bound of the measurement 9.81 seconds, to the nearest hundredth of a second?
9.80 s
9.805 s
9.81 s
9.815 s

Explanation

Lower bound of 9.81 (to the nearest 100th) = 9.805 s

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