Question

multiple - choice question
rule #4a states, \trailing zeros: if there is a decimal: count them\
how many significant figures are in the number below?
23,000.

Explanation:

Step1: Identify significant - figure rule

The number 23,000. has a decimal point. According to the rule, trailing zeros are counted as significant figures when there is a decimal point.

Step2: Count significant figures

The digits 2, 3 and the three trailing zeros are all significant. So there are 5 significant figures.

Answer:

5