Question

If the denominator of a fraction has factors other than $2$ and $5$, the decimal expression ..............

• A. repeats
• B. is that of a whole number
• C. has equal numerator and denominator
• D. terminates

Answer 1

Answer: (A)

repeats

If there are prime factors in the denominator other than $2$ or $5$, then a block of digit repeats.
For example,$\frac{1}{24}=\frac{1}{3\times 2\times 2\times 2}$ (there is a factor of $3$, therefore decimal will repeat.)

$=\mathrm{0.416666...}$
Therefore, $A$ is the correct answer.