Problem Rankings

Rank Source Description Elo Rating
2501 AIME 2010 II Q14 In right triangle \( ABC\) with right angle at \( ... 1500.00
2502 AIME 2010 II Q15 In triangle \( ABC\), \( AC = 13, BC = 14,\) and \... 1500.00
2503 AIME 2005 I Q1 Six circles form a ring with with each circle exte... 1500.00
2504 AIME 2005 I Q3 How many positive integers have exactly three prop... 1500.00
2505 AIME 2005 I Q4 The director of a marching band wishes to place th... 1500.00
2506 AIME 2005 I Q5 Robert has 4 indistinguishable gold coins and 4 in... 1500.00
2507 AIME 2005 I Q6 Let \(P\) be the product of the nonreal roots of \... 1500.00
2508 AIME 2005 I Q7 In quadrilateral \(ABCD\), \(BC=8\), \(CD=12\), \(... 1500.00
2509 AIME 2005 I Q9 Twenty seven unit cubes are painted orange on a se... 1500.00
2510 AIME 2005 I Q11 A semicircle with diameter \(d\) is contained in a... 1500.00
2511 AIME 2005 I Q12 For positive integers \(n\), let \(\tau (n)\) deno... 1500.00
2512 AIME 2005 I Q13 A particle moves in the Cartesian Plane according ... 1500.00
2513 AIME 2005 I Q15 Triangle \(ABC\) has \(BC=20\). The incircle of t... 1500.00
2514 AIME 2005 II Q2 A hotel packed breakfast for each of three guests.... 1500.00
2515 AIME 2005 II Q3 An infinite geometric series has sum \(2005\). A n... 1500.00
2516 AIME 2005 II Q5 Determine the number of ordered pairs \((a,b)\) of... 1500.00
2517 AIME 2005 II Q6 The cards in a stack of \(2n\) cards are numbered ... 1500.00
2518 AIME 2005 II Q7 Let \[x=\frac{4}{(\sqrt{5}+1)(\sqrt[4]{5}+1)(\sqrt... 1500.00
2519 AIME 2005 II Q8 Circles \(C_1\) and \(C_2\) are externally tangent... 1500.00
2520 AIME 2005 II Q9 For how many positive integers \(n\) less than or ... 1500.00