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In how many ways can you answer the questions on an exam that consists of 20 true-false questions?
Q30: Which month in 1989 had the lowest
Q107: <span class="ql-formula" data-value="( \sqrt { x }
Q122: Find the vector equation of the
Q131: 6x - 4y = 40 -3x -
Q132: <span class="ql-formula" data-value="- 9 , - 17
Q168: <span class="ql-formula" data-value="( 3,7 ]"><span class="katex-display"><span class="katex"><span
Q234: <span class="ql-formula" data-value="\begin{array} { l } y
Q237: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8181/.jpg" alt=" A)
Q276: <span class="ql-formula" data-value="1 + 5 i"><span class="katex"><span
Q320: <span class="ql-formula" data-value="x^{2}+y^{2}=7"><span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><msup><mi>x</mi><mn>2</mn></msup><mo>+</mo><msup><mi>y</mi><mn>2</mn></msup><mo>=</mo><mn>7</mn></mrow><annotation encoding="application/x-tex">x^{2}+y^{2}=7</annotation></semantics></math></span><span