Question 11: Find the appropriate values of the digit a such that: \( \overline { – a99} > – 649 > \overline { – 6a0} \)
\(\overline { – a99} > – 649 > \overline { – 6a0} \to \overline {a99} < 649 < \overline {6a0} \to \left\{ \begin{array}{l} a < 6 \\ 4 < a \end{array} \right \Rightarrow 4 < a < 6\)
That a∈N* so a=5
The answer to choose is: GET
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