First slide

Accuracy; precision of instruments and errors in measurements

Question

Round 742396 to four, three and two significant digits.

Moderate

A

7423, 742, 74
B

742400, 742000, 740000
C

742300, 742000, 740000
D

None of these

Solution

There are 6 significant figures in 742396.
742400 = 4 significant figures
742000 = 3 significant figures
740000 = 2 significant figures

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