How many significant figures are present in the number 0.00250?

Model Answer & Options

Source: Extra Practice

2

3

5

4

Explanation

According to significant figure rules: 1) Leading zeros (zeros to the left of the first non-zero digit) are not significant. 2) Trailing zeros to the right of the decimal point are significant. Thus, in 0.00250, '2', '5', and the final '0' are significant. The three zeros after the decimal but before '2' are placeholders.

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