The length of an exercise book is given as 20cm correct to the nearest centimeter. In which of the following ranges of possible measurement does the actual length lie?
a
19.5 - 20.4cm
b
19.1 - 20.9cm
c
19.9 - 20.1cm
d
19.95 - 20.05cm
e
19 - 21cm
Explanation
Correct Option
aVideo Explanation
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