Discussion
Consider the following statements about significant figures.
1. The result of a multiplication carries the figures of the least precise input.
2. Trailing zeros after a decimal point are significant.
3. Carrying more figures in an answer makes it more accurate.
Answer: D
The first two are correct. The third confuses precision with accuracy, since extra digits merely restate the uncertainty of the input data with a false appearance of confidence. The rule protects the reader from a spurious precision.
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