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Q6: <span class="ql-formula" data-value="\begin{array} { l } x
Q40: <span class="ql-formula" data-value="1 ^ { 2 }
Q42: Each of ten tickets is marked
Q54: <span class="ql-formula" data-value="\frac { x ^ {
Q85: <span class="ql-formula" data-value="a _ { 1 }
Q108: A certain club initially has 170 members
Q126: For <span class="ql-formula" data-value="7 ,
Q146: <span class="ql-formula" data-value="x - 19 = 0"><span
Q189: <span class="ql-formula" data-value="\frac { ( x +
Q476: <span class="ql-formula" data-value="\frac { x } {