Question

The result of the operation $2.5\times 1.25$ should be which of the following on the basis of significant figures?

• A. $3.12$
• B. $3.13$
• C. $3.1$
• D. $31.25$

Answer 1

Answer: (C)

$2.5\times 1.25=3.125$
Since $2.5$ has two significant figures, the result should not have more than two significant figures. Hence, the answer will be $3.1$.