| 1961 |
AMC 12 1987 A Q21 |
There are two natural ways to inscribe a square in... |
1500.00 |
| 1962 |
AMC 12 1987 A Q24 |
How many polynomial functions \(f\) of degree \(\g... |
1500.00 |
| 1963 |
AMC 12 1987 A Q25 |
\(ABC\) is a triangle: \(A=(0,0)\), \(B=(36,15)\) ... |
1500.00 |
| 1964 |
AMC 12 1987 A Q30 |
In the figure, \(\triangle ABC\) has \(\angle A =4... |
1500.00 |
| 1965 |
AMC 12 1980 A Q1 |
The largest whole number such that seven times the... |
1500.00 |
| 1966 |
AMC 12 1980 A Q2 |
The degree of \((x^2+1)^4 (x^3+1)^3\) as a polynom... |
1500.00 |
| 1967 |
AMC 12 1980 A Q4 |
In the adjoining figure, CDE is an equilateral tri... |
1500.00 |
| 1968 |
AMC 12 1980 A Q5 |
If \(AB\) and \(CD\) are perpendicular diameters o... |
1500.00 |
| 1969 |
AMC 12 1980 A Q7 |
Sides \(AB,BC,CD\) and \(DA\) of convex polygon \(... |
1500.00 |
| 1970 |
AMC 12 1980 A Q9 |
A man walks \(x\) miles due west, turns \(150^\cir... |
1500.00 |
| 1971 |
AMC 12 1980 A Q11 |
If the sum of the first 10 terms and the sum of th... |
1500.00 |
| 1972 |
AMC 12 1980 A Q12 |
The equations of \(L_1\) and \(L_2\) are \(y=mx\) ... |
1500.00 |
| 1973 |
AMC 12 1980 A Q13 |
A bug (of negligible size) starts at the origin on... |
1500.00 |
| 1974 |
AMC 12 1980 A Q14 |
If the function \(f\) is defined by
\[ f(x)=\frac... |
1500.00 |
| 1975 |
AMC 12 1980 A Q15 |
A store prices an item in dollars and cents so tha... |
1500.00 |
| 1976 |
AMC 12 1980 A Q16 |
Four of the eight vertices of a cube are the verti... |
1500.00 |
| 1977 |
AMC 12 1980 A Q17 |
Given that \(i^2=-1\), for how many integers \(n\)... |
1500.00 |
| 1978 |
AMC 12 1980 A Q18 |
If \(b>1\), \(\sin x>0\), \(\cos x>0\), and \(\log... |
1500.00 |
| 1979 |
AMC 12 1980 A Q20 |
A box contains 2 pennies, 4 nickels, and 6 dimes. ... |
1500.00 |
| 1980 |
AMC 12 1980 A Q21 |
In triangle \(ABC\), \(\measuredangle CBA=72^\circ... |
1500.00 |