Art of Problem Solving
AoPS Online
Math texts, online classes, and more
for students in grades 5-12.
Visit AoPS Online ‚
Books for Grades 5-12 Online Courses
Beast Academy
Engaging math books and online learning
for students ages 6-13.
Visit Beast Academy ‚
Books for Ages 6-13 Beast Academy Online
AoPS Academy
Small live classes for advanced math
and language arts learners in grades 2-12.
Visit AoPS Academy ‚
Find a Physical Campus Visit the Virtual Campus

2020 AIME II Problems

Revision as of 12:58, 14 December 2020 by Thepakistowners (talk | contribs) (→‎Problem 10)
2020 AIME II (Answer Key)
Printable version | AoPS Contest Collections • PDF

Instructions

  1. This is a 15-question, 3-hour examination. All answers are integers ranging from $000$ to $999$, inclusive. Your score will be the number of correct answers; i.e., there is neither partial credit nor a penalty for wrong answers.
  2. No aids other than scratch paper, graph paper, ruler, compass, and protractor are permitted. In particular, calculators and computers are not permitted.
1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15

Problem 1

Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks!

Solution

Problem 2

Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks!

Solution

Problem 3

Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Solution

Problem 4

Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks!

Solution

Problem 5

Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks!

Solution

Problem 6

Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks!

Solution

Problem 7

Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks!

Solution

Problem 8

Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks!

Solution

Problem 9

Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks!

Solution

Problem 10

Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Scorpio Sucks! Solution

Problem 11

Let $P(x) = x^2 - 3x - 7$, and let $Q(x)$ and $R(x)$ be two quadratic polynomials also with the coefficient of $x^2$ equal to $1$. David computes each of the three sums $P + Q$, $P + R$, and $Q + R$ and is surprised to find that each pair of these sums has a common root, and these three common roots are distinct. If $Q(0) = 2$, then $R(0) = \frac{m}{n}$, where $m$ and $n$ are relatively prime positive integers. Find $m + n$.

Solution

Problem 12

Let $m$ and $n$ be odd integers greater than $1.$ An $m\times n$ rectangle is made up of unit squares where the squares in the top row are numbered left to right with the integers $1$ through $n$, those in the second row are numbered left to right with the integers $n + 1$ through $2n$, and so on. Square $200$ is in the top row, and square $2000$ is in the bottom row. Find the number of ordered pairs $(m,n)$ of odd integers greater than $1$ with the property that, in the $m\times n$ rectangle, the line through the centers of squares $200$ and $2000$ intersects the interior of square $1099$.

Solution

Problem 13

Convex pentagon $ABCDE$ has side lengths $AB=5$, $BC=CD=DE=6$, and $EA=7$. Moreover, the pentagon has an inscribed circle (a circle tangent to each side of the pentagon). Find the area of $ABCDE$.

Solution

Problem 14

For real number $x$ let $\lfloor x\rfloor$ be the greatest integer less than or equal to $x$, and define $\{x\} = x - \lfloor x \rfloor$ to be the fractional part of $x$. For example, $\{3\} = 0$ and $\{4.56\} = 0.56$. Define $f(x)=x\{x\}$, and let $N$ be the number of real-valued solutions to the equation $f(f(f(x)))=17$ for $0\leq x\leq 2020$. Find the remainder when $N$ is divided by $1000$.

Solution

Problem 15

Let $\triangle ABC$ be an acute scalene triangle with circumcircle $\omega$. The tangents to $\omega$ at $B$ and $C$ intersect at $T$. Let $X$ and $Y$ be the projections of $T$ onto lines $AB$ and $AC$, respectively. Suppose $BT = CT = 16$, $BC = 22$, and $TX^2 + TY^2 + XY^2 = 1143$. Find $XY^2$.

Solution

2020 AIME II (Problems • Answer Key • Resources)
Preceded by
2020 AIME I Problems 		Followed by
2021 AIME I Problems
1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15
All AIME Problems and Solutions

The problems on this page are copyrighted by the Mathematical Association of America's American Mathematics Competitions. AMC logo.png

Retrieved from "https://artofproblemsolving.com/wiki/index.php?title=2020_AIME_II_Problems&oldid=139619"