First slide

Accuracy; precision of instruments and errors in measurements

Question

Round off 231.45 to four, three and two significant digits.

Moderate

A

231, 23, 230
B

0.02315, 0.0231, 0.023
C

231.4, 231, 230
D

None of these

Solution

231.4 (four significant digits)
231 (three significant digits)
230 (two significant digits)

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