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Q2: A rectangular board is 8 by 19
Q25: 7, 10, 13, 16, . . .
Q49: <span class="ql-formula" data-value="1.5050505 \ldots"><span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>1.5050505</mn><mo>…</mo></mrow><annotation
Q61: <span class="ql-formula" data-value="36 + 49 + 64
Q63: <span class="ql-formula" data-value="- \sqrt { - 272
Q100: <span class="ql-formula" data-value="\mathbf { r } =
Q153: <span class="ql-formula" data-value="y \geq 7 x^{2}-5"><span class="katex"><span
Q223: <span class="ql-formula" data-value="7 x - 31 =
Q283: <span class="ql-formula" data-value="2 x ^ { 2
Q296: <span class="ql-formula" data-value="\begin{aligned}2 x+y & \leq 12