[["Problem: Compute $\\tan 180^\\circ$.\nAnswer:", ["\n"]], ["Problem: The diagonals of rectangle $PQRS$ intersect at point $X$.  If $PS = 6$ and $RS=8$, then what is $\\sin \\angle PXS$?\nAnswer:", ["\n"]], ["Problem: A pyramid has 6 vertices and 6 faces. How many edges does it have?\nAnswer:", ["\n"]], ["Problem: For how many positive integers $p$ does there exist a triangle with sides of length $3p-1,$ $3p,$ and $p^2 + 1?$\nAnswer:", ["\n"]], ["Problem: In the circle below, $\\overline{AB} \\| \\overline{CD}$. $\\overline{AD}$ is a diameter of the circle, and $AD = 36^{\\prime \\prime}$. What is the number of inches in the length of $\\widehat{AB}$? Express your answer in terms of $\\pi$. [asy]\nimport markers;\nimport olympiad; size(150); import geometry; import graph; defaultpen(linewidth(0.8));\ndraw(Circle(origin,36));\npair A = 36*dir(130);\npair B = 36*dir(50);\npair D = 36*dir(-50);\npair C = 36*dir(-130);\ndraw(B--A--D--C);\nlabel(\"$A$\",A,W); label(\"$B$\",B,E); label(\"$C$\",C,W); label(\"$D$\",D,E);\nmarkangle(\"$50^{\\circ}$\",D,A,B,radius=10);\n[/asy]\nAnswer:", ["\n"]], ["Problem: Compute $\\cos 1050^\\circ$.\nAnswer:", ["\n"]], ["Problem: Given regular pentagon $ABCDE,$ a circle can be drawn that is tangent to $\\overline{DC}$ at $D$ and to $\\overline{AB}$ at $A.$ In degrees, what is the measure of minor arc $AD$? [asy]import olympiad; import geometry; size(100); defaultpen(linewidth(0.8));\npair[] pentagon = new pair[5];\npentagon[0] = dir(36);\npentagon.cyclic=true;\nfor(int i = 1; i < 6; ++i){\n \npentagon[i] = dir(72*i + 36);\n\ndraw(pentagon[i - 1]--pentagon[i]);\n}\ndot(\"$C$\",pentagon[0],NE);\ndot(\"$D$\",pentagon[1],N);\ndot(\"$E$\",pentagon[2],W);\ndot(\"$A$\",pentagon[3],S);\ndot(\"$B$\",pentagon[4],SE);\nline x = line(pentagon[1],pentagon[1] + dir(-108));\nline x2 = line(origin,pentagon[2]);\npair ccenter = coordinates(intersectionpoint(x,x2));\ndraw(Circle(ccenter,arclength(ccenter--pentagon[1])));\n[/asy]\nAnswer:", ["\n"]], ["Problem: Let $A(2,2)$ and $B(7,7)$ be points in the plane. Define $R$ as the region in the first quadrant consisting of those points $C$ such that $\\triangle ABC$ is an acute triangle. What is the area of the region $R$?\nAnswer:", ["\n"]], ["Problem: An antacid tablet is in the shape of a right circular cylinder. The diameter of the base is $\\frac{3}{4}$ inches and the tablet is $\\frac{3}{16}$ inches thick. How many cubic inches are in the volume of the tablet? Express your answer as a common fraction in terms of $\\pi$.\nAnswer:", ["\n"]], ["Problem: A circle is centered at $O$, $\\overline{AB}$ is a diameter and $C$ is a point on the circle with $\\angle COB = 50^\\circ$.  What is the degree measure of $\\angle CAB$?\nAnswer:", ["\n"]]]