Problem Rankings

Rank Source Description Elo Rating
401 AMC 10 2007 A Q5 A school store sells 7 pencils and 8 notebooks for... 1516.00
402 AMC 10 2007 A Q13 Yan is somewhere between his home and the stadium.... 1516.00
403 AMC 10 2007 A Q25 For each positive integer \(n\), let \(S(n)\) deno... 1516.00
404 AMC 10 2007 B Q14 Some boys and girls are having a car wash to raise... 1516.00
405 AMC 10 2007 B Q17 Point \( P\) is inside equilateral \( \triangle AB... 1516.00
406 AMC 10 2008 A Q16 Points \( A\) and \( B\) lie on a circle centered ... 1516.00
407 AMC 10 2008 A Q23 Two subsets of the set \( S=\{a,b,c,d,e\}\) are to... 1516.00
408 AMC 10 2008 B Q13 For each positive integer \( n\), the mean of the ... 1516.00
409 AMC 10 2008 B Q18 Bricklayer Brenda would take \( 9\) hours to build... 1516.00
410 AMC 10 2008 B Q20 The faces of a cubical die are marked with the num... 1516.00
411 AMC 10 2008 B Q21 Ten chairs are evenly spaced around a round table ... 1516.00
412 AMC 10 2008 B Q22 Three red beads, two white beads, and one blue bea... 1516.00
413 AMC 10 2009 A Q17 Rectangle \( ABCD\) has \( AB = 4\) and \( BC = 3\... 1516.00
414 AMC 10 2009 A Q19 Circle \( A\) has radius \( 100\). Circle \( B\) h... 1516.00
415 AMC 10 2009 A Q22 Two cubical dice each have removable numbers \( 1\... 1516.00
416 AMC 10 2009 A Q24 Three distinct vertices of a cube are chosen at ra... 1516.00
417 AMC 10 2009 A Q25 For \( k>0\), let \( I_k=10\ldots 064\), where the... 1516.00
418 AMC 10 2009 B Q16 Points \( A\) and \( C\) lie on a circle centered ... 1516.00
419 AMC 10 2009 B Q17 Five unit squares are arranged in the coordinate p... 1516.00
420 AMC 10 2010 B Q12 At the beginning of the school year, \( 50\%\) of ... 1516.00