Problem Rankings

Rank Source Description Elo Rating
1481 AMC 12 2019 A Q16 The numbers \(1,2,\dots,9\) are randomly placed in... 1500.00
1482 AMC 12 2019 A Q17 Let \(s_k\) denote the sum of the \(\textit{k}\)th... 1500.00
1483 AMC 12 2019 A Q18 A sphere with center \(O\) has radius \(6\). A tri... 1500.00
1484 AMC 12 2019 A Q19 In \(\triangle ABC\) with integer side lengths, \... 1500.00
1485 AMC 12 2019 A Q20 Real numbers between 0 and 1, inclusive, are chose... 1500.00
1486 AMC 12 2019 A Q21 Let \($z=\frac{1+i}{\sqrt{2}}.\)\(What is \)\((z^{... 1500.00
1487 AMC 12 2019 A Q23 Define binary operations \(\diamondsuit\) and \(\h... 1500.00
1488 AMC 12 2019 A Q25 Let \(\triangle A_0B_0C_0\) be a triangle whose an... 1500.00
1489 AMC 12 2019 B Q1 Alicia had two containers. The first was \(\tfrac{... 1500.00
1490 AMC 12 2019 B Q2 Consider the statement, "If \(n\) is not prime, th... 1500.00
1491 AMC 12 2019 B Q3 Which one of the following rigid transformations (... 1500.00
1492 AMC 12 2019 B Q4 A positive integer \(n\) satisfies the equation \(... 1500.00
1493 AMC 12 2019 B Q5 Each piece of candy in a store costs a whole numbe... 1500.00
1494 AMC 12 2019 B Q6 In a given plane, points \(A\) and \(B\) are \(10\... 1500.00
1495 AMC 12 2019 B Q9 For how many integral values of \(x\) can a triang... 1500.00
1496 AMC 12 2019 B Q13 A red ball and a green ball are randomly and indep... 1500.00
1497 AMC 12 2019 B Q14 Let \(S\) be the set of all positive integer divis... 1500.00
1498 AMC 12 2019 B Q15 As shown in the figure, line segment \(\overline{A... 1500.00
1499 AMC 12 2019 B Q16 There are lily pads in a row numbered 0 to 11, in ... 1500.00
1500 AMC 12 2019 B Q17 How many nonzero complex numbers \(z\) have the pr... 1500.00