Question

The decimal expansion of the rational number $\frac{31}{2^2.5}$ will terminate after:

• A. one decimal place
• B. two decimal places
• C. three decimal places
• D. more than 3 decimal places

Answer 1

Answer: (B)

two decimal places

$\frac{31}{2^2\times 5}$ = $\frac{31}{20}=1.55$

It is clearly seen that this fraction terminates after two decimal places.