Difference between revisions of "User:Rowechen"
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Here's the AIME compilation I will be doing: | Here's the AIME compilation I will be doing: | ||
− | == Problem | + | == Problem 2 == |
− | + | A circle with diameter <math>\overline{PQ}\,</math> of length 10 is internally tangent at <math>P^{}_{}</math> to a circle of radius 20. Square <math>ABCD\,</math> is constructed with <math>A\,</math> and <math>B\,</math> on the larger circle, <math>\overline{CD}\,</math> tangent at <math>Q\,</math> to the smaller circle, and the smaller circle outside <math>ABCD\,</math>. The length of <math>\overline{AB}\,</math> can be written in the form <math>m + \sqrt{n}\,</math>, where <math>m\,</math> and <math>n\,</math> are integers. Find <math>m + n\,</math>. | |
− | [[ | + | [[1994 AIME Problems/Problem 2|Solution]] |
+ | == Problem 6 == | ||
+ | For how many pairs of consecutive integers in <math>\{1000,1001,1002^{}_{},\ldots,2000\}</math> is no carrying required when the two integers are added? | ||
− | + | [[1992 AIME Problems/Problem 6|Solution]] | |
− | + | == Problem 6 == | |
− | + | The graphs of the equations | |
− | [[ | + | <center><math>y=k, \qquad y=\sqrt{3}x+2k, \qquad y=-\sqrt{3}x+2k,</math></center> |
− | + | are drawn in the coordinate plane for <math>k=-10,-9,-8,\ldots,9,10.\,</math> These 63 lines cut part of the plane into equilateral triangles of side <math>2/\sqrt{3}</math>. How many such triangles are formed? | |
− | == Problem | ||
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+ | [[1994 AIME Problems/Problem 6|Solution]] | ||
== Problem 8 == | == Problem 8 == | ||
− | + | Let <math>S\,</math> be a set with six elements. In how many different ways can one select two not necessarily distinct subsets of <math>S\,</math> so that the union of the two subsets is <math>S\,</math>? The order of selection does not matter; for example, the pair of subsets <math>\{a, c\}\,</math>, <math>\{b, c, d, e, f\}\,</math> represents the same selection as the pair <math>\{b, c, d, e, f\}\,</math>, <math>\{a, c\}\,</math>. | |
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+ | [[1993 AIME Problems/Problem 8|Solution]] | ||
== Problem 7 == | == Problem 7 == | ||
− | + | For certain ordered pairs <math>(a,b)\,</math> of real numbers, the system of equations | |
+ | <center><math>ax+by=1\,</math></center> | ||
+ | <center><math>x^2+y^2=50\,</math></center> | ||
+ | has at least one solution, and each solution is an ordered pair <math>(x,y)\,</math> of integers. How many such ordered pairs <math>(a,b)\,</math> are there? | ||
− | [[ | + | [[1994 AIME Problems/Problem 7|Solution]] |
+ | == Problem 8 == | ||
+ | The points <math>(0,0)\,</math>, <math>(a,11)\,</math>, and <math>(b,37)\,</math> are the vertices of an equilateral triangle. Find the value of <math>ab\,</math>. | ||
+ | [[1994 AIME Problems/Problem 8|Solution]] | ||
== Problem 12 == | == Problem 12 == | ||
− | + | The vertices of <math>\triangle ABC</math> are <math>A = (0,0)\,</math>, <math>B = (0,420)\,</math>, and <math>C = (560,0)\,</math>. The six faces of a die are labeled with two <math>A\,</math>'s, two <math>B\,</math>'s, and two <math>C\,</math>'s. Point <math>P_1 = (k,m)\,</math> is chosen in the interior of <math>\triangle ABC</math>, and points <math>P_2\,</math>, <math>P_3\,</math>, <math>P_4, \dots</math> are generated by rolling the die repeatedly and applying the rule: If the die shows label <math>L\,</math>, where <math>L \in \{A, B, C\}</math>, and <math>P_n\,</math> is the most recently obtained point, then <math>P_{n + 1}^{}</math> is the midpoint of <math>\overline{P_n L}</math>. Given that <math>P_7 = (14,92)\,</math>, what is <math>k + m\,</math>? | |
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− | [[ | + | [[1993 AIME Problems/Problem 12|Solution]] |
== Problem 11 == | == Problem 11 == | ||
− | + | Ninety-four bricks, each measuring <math>4''\times10''\times19'',</math> are to be stacked one on top of another to form a tower 94 bricks tall. Each brick can be oriented so it contributes <math>4''\,</math> or <math>10''\,</math> or <math>19''\,</math> to the total height of the tower. How many different tower heights can be achieved using all 94 of the bricks? | |
− | + | [[1994 AIME Problems/Problem 11|Solution]] | |
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== Problem 12 == | == Problem 12 == | ||
− | + | Pyramid <math>OABCD</math> has square base <math>ABCD,</math> congruent edges <math>\overline{OA}, \overline{OB}, \overline{OC},</math> and <math>\overline{OD},</math> and <math>\angle AOB=45^\circ.</math> Let <math>\theta</math> be the measure of the dihedral angle formed by faces <math>OAB</math> and <math>OBC.</math> Given that <math>\cos \theta=m+\sqrt{n},</math> where <math>m_{}</math> and <math>n_{}</math> are integers, find <math>m+n.</math> | |
− | [[ | + | [[1995 AIME Problems/Problem 12|Solution]] |
== Problem 10 == | == Problem 10 == | ||
− | + | Find the smallest positive integer solution to <math>\tan{19x^{\circ}}=\dfrac{\cos{96^{\circ}}+\sin{96^{\circ}}}{\cos{96^{\circ}}-\sin{96^{\circ}}}</math>. | |
− | [[ | + | [[1996 AIME Problems/Problem 10|Solution]] |
== Problem 13 == | == Problem 13 == | ||
− | Let <math> | + | Let <math>f(n)</math> be the integer closest to <math>\sqrt[4]{n}.</math> Find <math>\sum_{k=1}^{1995}\frac 1{f(k)}.</math> |
− | [[ | + | [[1995 AIME Problems/Problem 13|Solution]] |
== Problem 14 == | == Problem 14 == | ||
− | + | In a circle of radius 42, two chords of length 78 intersect at a point whose distance from the center is 18. The two chords divide the interior of the circle into four regions. Two of these regions are bordered by segments of unequal lengths, and the area of either of them can be expressed uniquely in the form <math>m\pi-n\sqrt{d},</math> where <math>m, n,</math> and <math>d_{}</math> are positive integers and <math>d_{}</math> is not divisible by the square of any prime number. Find <math>m+n+d.</math> | |
− | + | ||
− | + | [[1995 AIME Problems/Problem 14|Solution]] | |
− | + | == Problem 13 == | |
− | + | In triangle <math>ABC</math>, <math>AB=\sqrt{30}</math>, <math>AC=\sqrt{6}</math>, and <math>BC=\sqrt{15}</math>. There is a point <math>D</math> for which <math>\overline{AD}</math> bisects <math>\overline{BC}</math>, and <math>\angle ADB</math> is a right angle. The ratio | |
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− | + | <cmath>\dfrac{\text{Area}(\triangle ADB)}{\text{Area}(\triangle ABC)}</cmath> | |
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− | + | can be written in the form <math>\dfrac{m}{n}</math>, where <math>m</math> and <math>n</math> are relatively prime positive integers. Find <math>m+n</math>. | |
− | [[ | + | [[1996 AIME Problems/Problem 13|Solution]] |
== Problem 15 == | == Problem 15 == | ||
− | + | In parallelogram <math>ABCD,</math> let <math>O</math> be the intersection of diagonals <math>\overline{AC}</math> and <math>\overline{BD}</math>. Angles <math>CAB</math> and <math>DBC</math> are each twice as large as angle <math>DBA,</math> and angle <math>ACB</math> is <math>r</math> times as large as angle <math>AOB</math>. Find the greatest integer that does not exceed <math>1000r</math>. | |
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− | [[ | + | [[1996 AIME Problems/Problem 15|Solution]] |
− | == Problem | + | == Problem 13 == |
− | + | If <math>\{a_1,a_2,a_3,\ldots,a_n\}</math> is a [[set]] of [[real numbers]], indexed so that <math>a_1 < a_2 < a_3 < \cdots < a_n,</math> its complex power sum is defined to be <math>a_1i + a_2i^2+ a_3i^3 + \cdots + a_ni^n,</math> where <math>i^2 = - 1.</math> Let <math>S_n</math> be the sum of the complex power sums of all nonempty [[subset]]s of <math>\{1,2,\ldots,n\}.</math> Given that <math>S_8 = - 176 - 64i</math> and <math> S_9 = p + qi,</math> where <math>p</math> and <math>q</math> are integers, find <math>|p| + |q|.</math> | |
− | [[ | + | [[1998 AIME Problems/Problem 13|Solution]] |
Revision as of 14:10, 25 May 2020
Hey how did you get to this page? If you aren't me then I have to say hello. If you are me then I must be pretty conceited to waste my time looking at my own page. If you aren't me, seriously, how did you get to this page? This is pretty cool. Well, nice meeting you! I'm going to stop wasting my time typing this up and do some math. Gtg. Bye.
Here's the AIME compilation I will be doing:
Contents
Problem 2
A circle with diameter of length 10 is internally tangent at
to a circle of radius 20. Square
is constructed with
and
on the larger circle,
tangent at
to the smaller circle, and the smaller circle outside
. The length of
can be written in the form
, where
and
are integers. Find
.
Problem 6
For how many pairs of consecutive integers in is no carrying required when the two integers are added?
Problem 6
The graphs of the equations

are drawn in the coordinate plane for These 63 lines cut part of the plane into equilateral triangles of side
. How many such triangles are formed?
Problem 8
Let be a set with six elements. In how many different ways can one select two not necessarily distinct subsets of
so that the union of the two subsets is
? The order of selection does not matter; for example, the pair of subsets
,
represents the same selection as the pair
,
.
Problem 7
For certain ordered pairs of real numbers, the system of equations


has at least one solution, and each solution is an ordered pair of integers. How many such ordered pairs
are there?
Problem 8
The points ,
, and
are the vertices of an equilateral triangle. Find the value of
.
Problem 12
The vertices of are
,
, and
. The six faces of a die are labeled with two
's, two
's, and two
's. Point
is chosen in the interior of
, and points
,
,
are generated by rolling the die repeatedly and applying the rule: If the die shows label
, where
, and
is the most recently obtained point, then
is the midpoint of
. Given that
, what is
?
Problem 11
Ninety-four bricks, each measuring are to be stacked one on top of another to form a tower 94 bricks tall. Each brick can be oriented so it contributes
or
or
to the total height of the tower. How many different tower heights can be achieved using all 94 of the bricks?
Problem 12
Pyramid has square base
congruent edges
and
and
Let
be the measure of the dihedral angle formed by faces
and
Given that
where
and
are integers, find
Problem 10
Find the smallest positive integer solution to .
Problem 13
Let be the integer closest to
Find
Problem 14
In a circle of radius 42, two chords of length 78 intersect at a point whose distance from the center is 18. The two chords divide the interior of the circle into four regions. Two of these regions are bordered by segments of unequal lengths, and the area of either of them can be expressed uniquely in the form where
and
are positive integers and
is not divisible by the square of any prime number. Find
Problem 13
In triangle ,
,
, and
. There is a point
for which
bisects
, and
is a right angle. The ratio
can be written in the form , where
and
are relatively prime positive integers. Find
.
Problem 15
In parallelogram let
be the intersection of diagonals
and
. Angles
and
are each twice as large as angle
and angle
is
times as large as angle
. Find the greatest integer that does not exceed
.
Problem 13
If is a set of real numbers, indexed so that
its complex power sum is defined to be
where
Let
be the sum of the complex power sums of all nonempty subsets of
Given that
and
where
and
are integers, find