| 2101 |
AMC 12 1991 A Q7 |
If \(x = \frac{a}{b}\), \(a \ne b\) and \(b \ne 0\... |
1500.00 |
| 2102 |
AMC 12 1991 A Q8 |
Liquid X does not mix with water. Unless obstruct... |
1500.00 |
| 2103 |
AMC 12 1991 A Q9 |
From time \(t = 0\) to time \(t = 1\) a population... |
1500.00 |
| 2104 |
AMC 12 1991 A Q10 |
Point \(P\) is \(9\) units from the center of a ci... |
1500.00 |
| 2105 |
AMC 12 1991 A Q11 |
Jack and Jill run \(10\) kilometers. They start a... |
1500.00 |
| 2106 |
AMC 12 1991 A Q12 |
The measures (in degrees) of the interior angles o... |
1500.00 |
| 2107 |
AMC 12 1991 A Q13 |
Horses X, Y and Z are entered in a three-horse rac... |
1500.00 |
| 2108 |
AMC 12 1991 A Q14 |
If \(x\) is the cube of a positive integer and \(d... |
1500.00 |
| 2109 |
AMC 12 1991 A Q15 |
A circular table has exactly 60 chairs around it. ... |
1500.00 |
| 2110 |
AMC 12 1991 A Q16 |
One hundred students at Century High School partic... |
1500.00 |
| 2111 |
AMC 12 1991 A Q17 |
A positive integer \(N\) is a palindrome if the in... |
1500.00 |
| 2112 |
AMC 12 1991 A Q18 |
If \(S\) is the set of points \(z\) in the complex... |
1500.00 |
| 2113 |
AMC 12 1991 A Q19 |
Triangle \(ABC\) has a right angle at \(C\), \(AC ... |
1500.00 |
| 2114 |
AMC 12 1991 A Q20 |
The sum of all real \(x\) such that \((2^{x} - 4)^... |
1500.00 |
| 2115 |
AMC 12 1991 A Q21 |
If \(f\left(\frac{x}{x - 1}\right) = \frac{1}{x}\)... |
1500.00 |
| 2116 |
AMC 12 1991 A Q22 |
Two circles are externally tangent. Lines \(\over... |
1500.00 |
| 2117 |
AMC 12 1991 A Q28 |
Initially an urn contains 100 black marbles and 10... |
1500.00 |
| 2118 |
AMC 12 1991 A Q29 |
Equilateral triangle \(ABC\) has been creased and ... |
1500.00 |
| 2119 |
AMC 12 1991 A Q30 |
For any set \(S\), let \(|S|\) denote the number o... |
1500.00 |
| 2120 |
AMC 12 1983 A Q3 |
Three primes \(p,q,\) and \(r\) satisfy \(p+q = r\... |
1500.00 |