Question

The result reported in the following multiplication of significant figures, $2.5\times 1.25=3.125$ should be

• A. $3.125$
• B. $3.1$
• C. $3.12$
• D. $3.10$

Answer 1

Answer: (B)

In these operations, the result must be reported with not more significant figures as in the measurement with the fewest significant figures.
$2.5\times 1.25=3.125$
Since, $2.5$ has two significant figures, the result should not have more than two significant figures, thus it is $3.1$.