Question

Which of the following fraction is a terminating decimal?

• A.
• B.
• C.
• D.

Answer 1

The correct option is B

$\frac{21}{80}$ here, denominator $80=2\times 2\times 2\times 2\times 5=2^4{5}^1$

which is of the form $2^p{5}^q$. Hence, the fraction is a terminating decimal.