| 2001 |
AMC 12 1981 A Q5 |
In trapezoid \(ABCD\), sides \(AB\) and \(CD\) are... |
1500.00 |
| 2002 |
AMC 12 1981 A Q7 |
How many of the first one hundred positive integer... |
1500.00 |
| 2003 |
AMC 12 1981 A Q9 |
In the adjoining figure, \(PQ\) is a diagonal of t... |
1500.00 |
| 2004 |
AMC 12 1981 A Q11 |
The three sides of a right triangle have integral ... |
1500.00 |
| 2005 |
AMC 12 1981 A Q13 |
Suppose that at the end of any year, a unit of mon... |
1500.00 |
| 2006 |
AMC 12 1981 A Q14 |
In a geometric sequence of real numbers, the sum o... |
1500.00 |
| 2007 |
AMC 12 1981 A Q15 |
If \(b>1\), \(x>0\) and \((2x)^{\log_b 2}-(3x)^{\l... |
1500.00 |
| 2008 |
AMC 12 1981 A Q16 |
The base three representation of \(x\) is \[ 12112... |
1500.00 |
| 2009 |
AMC 12 1981 A Q17 |
The function \(f\) is not defined for \(x=0\), but... |
1500.00 |
| 2010 |
AMC 12 1981 A Q18 |
The number of real solutions to the equation \[ \f... |
1500.00 |
| 2011 |
AMC 12 1981 A Q19 |
In \(\triangle ABC\), \(M\) is the midpoint of sid... |
1500.00 |
| 2012 |
AMC 12 1981 A Q20 |
A ray of light originates from point \(A\) and and... |
1500.00 |
| 2013 |
AMC 12 1981 A Q22 |
How many lines in a three dimensional rectangular ... |
1500.00 |
| 2014 |
AMC 12 1981 A Q25 |
[asy]defaultpen(linewidth(.8pt));
pair A = (0,11)... |
1500.00 |
| 2015 |
AMC 12 1981 A Q26 |
Alice, Bob, and Carol repeatedly take turns tossin... |
1500.00 |
| 2016 |
AMC 12 1981 A Q27 |
In the adjoining figure triangle \( ABC\) is inscr... |
1500.00 |
| 2017 |
AMC 12 1981 A Q29 |
If \( a > 1\), then the sum of the real solutions ... |
1500.00 |
| 2018 |
AMC 12 1994 A Q3 |
How many of the following are equal to \(x^x+x^x\)... |
1500.00 |
| 2019 |
AMC 12 1994 A Q4 |
In the \(xy\)-plane, the segment with endpoints \(... |
1500.00 |
| 2020 |
AMC 12 1994 A Q5 |
Pat intended to multiply a number by \(6\) but ins... |
1500.00 |