Mathematics

The length of an exercise book is given as 20cm correct to the nearest centimeter….

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
Correct Answer: Option A
Explanation

In mathematics, numbers ranging from 0.5 – 0.9 are approximated to 1, while 0.1 – 0.4 are taken down to 0.