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Question
The square root of $${\text{0}}{\text{.}}\overline {\text{4}} $$  is ?
Options:
A .  $$0.\overline 6 $$
B .  $$0.\overline 7 $$
C .  $$0.\overline 8 $$
D .  $$0.\overline 9 $$
Answer: Option A
$$\eqalign{
& = \sqrt {{\text{0}}{\text{.}}\overline {\text{4}} {\text{ }}} \cr
& = \sqrt {\frac{4}{9}} \cr
& = \frac{2}{3} \cr
& = 0.666...... \cr
& = 0.\overline 6 \cr} $$

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