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Q23: <span class="ql-formula" data-value="\left\{ \begin{array} { l }
Q28: <span class="ql-formula" data-value="a _ { n }
Q177: <span class="ql-formula" data-value="21,12,3 , - 6 ,
Q201: <span class="ql-formula" data-value="\left( 4 x ^ {
Q204: <span class="ql-formula" data-value="P=(0,5) ; m=\frac{1}{2}"><span class="katex"><span class="katex-mathml"><math
Q220: <span class="ql-formula" data-value="- 10 - 5 -
Q229: <span class="ql-formula" data-value="y = \frac { -
Q230: <span class="ql-formula" data-value="( - 3 ) ^
Q231: <span class="ql-formula" data-value="- 4 ^ { -
Q253: <span class="ql-formula" data-value="0.00009,0.0009,0.009,0.09 , \ldots"><span class="katex"><span class="katex-mathml"><math