# Mock AIME 2 2006-2007 Problems

## Contents

## Problem 1

A positive integer is called a *dragon* if it can be written as the sum of four positive integers and such that Find the smallest dragon.

## Problem 2

The set consists of all integers from to inclusive. For how many elements in is an integer?

## Problem 3

Let be the sum of all positive integers such that is a perfect square. Find the remainder when is divided by

## Problem 4

Let be the smallest positive integer for which there exist positive real numbers and such that . Compute .

## Problem 5

Given that and find

## Problem 6

If and find

## Problem 7

A right circular cone of base radius cm and slant height cm is given. is a point on the circumference of the base and the shortest path from around the cone and back is drawn (see diagram). If the length of this path is where and are relatively prime positive integers, find

## Problem 8

The positive integers satisfy and for . Find the last three digits of .

## Problem 9

In right triangle Cevians and intersect at and are drawn to and respectively such that and If where and are relatively prime and has no perfect square divisors excluding find

## Problem 10

Find the number of solutions, in degrees, to the equation where

## Problem 11

Find the sum of the squares of the roots, real or complex, of the system of simultaneous equations

## Problem 12

In quadrilateral and If , and the area of is where are relatively prime positive integers, find

Note*: and refer to the areas of triangles and

## Problem 13

In his spare time, Richard Rusczyk shuffles a standard deck of 52 playing cards. He then turns the cards up one by one from the top of the deck until the third ace appears. If the expected (average) number of cards Richard will turn up is where and are relatively prime positive integers, find

## Problem 14

In triangle ABC, and Given that , and intersect at and are an angle bisector, median, and altitude of the triangle, respectively, compute the length of

## Problem 15

A cube is composed of unit cubes. The faces of unit cubes are colored red. An arrangement of the cubes is if there is exactly red unit cube in every rectangular box composed of unit cubes. Determine the number of colorings.