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- 10:49, 1 September 2020 (diff | hist) . . (-13) . . 2020 CIME I Problems/Problem 13
- 10:49, 1 September 2020 (diff | hist) . . (+661) . . N 2020 CIME I Problems/Problem 13 (Created page with "==Problem 13== Chris writes on a piece of paper the positive integers from <math>1</math> to <math>8</math> in that order. Then, he randomly writes either <math>+</math> or <m...")
- 10:38, 1 September 2020 (diff | hist) . . (-3) . . 2020 CIME I Problems/Problem 2
- 10:37, 1 September 2020 (diff | hist) . . (+1) . . 2020 CIME I Problems/Problem 1
- 10:36, 1 September 2020 (diff | hist) . . (0) . . 2020 CIME I Problems/Problem 1
- 17:13, 31 August 2020 (diff | hist) . . (-2) . . Christmas Invitational Mathematics Examination (current)
- 17:00, 31 August 2020 (diff | hist) . . (0) . . 2020 CIME I Problems (current)
- 17:00, 31 August 2020 (diff | hist) . . (0) . . 2020 CIME I Problems/Problem 8
- 16:58, 31 August 2020 (diff | hist) . . (-2) . . 2020 CIME I Problems/Problem 6
- 16:58, 31 August 2020 (diff | hist) . . (0) . . 2020 CIME I Problems/Problem 6
- 16:58, 31 August 2020 (diff | hist) . . (+70) . . 2020 CIME I Problems/Problem 6
- 16:54, 31 August 2020 (diff | hist) . . (0) . . 2020 CIME I Problems/Problem 4
- 16:54, 31 August 2020 (diff | hist) . . (0) . . 2020 CIME I Problems/Problem 3
- 16:53, 31 August 2020 (diff | hist) . . (0) . . 2020 CIME I Problems/Problem 6
- 15:20, 31 August 2020 (diff | hist) . . (0) . . 2020 CIME I Problems/Problem 12 (current)
- 15:20, 31 August 2020 (diff | hist) . . (+505) . . N 2020 CIME I Problems/Problem 12 (Created page with "==Problem 12== Define a sequence <math>a_0, a_1, a_2, ...</math> by <cmath>a_i=\underbrace{1\ldots1}_{2^{i}\text{ 1's}}\underbrace{0\ldots0}_{(2^i-1)\text{ 0's}}1_2,</cmath> w...")
- 15:20, 31 August 2020 (diff | hist) . . (0) . . 2020 CIME I Problems/Problem 11 (current)
- 15:14, 31 August 2020 (diff | hist) . . (+755) . . N 2020 CIME I Problems/Problem 11 (Created page with "==Problem 11== An <math>excircle</math> of a triangle is a circle tangent to one of the sides of the triangle and the extensions of the other two sides. Let <math>ABC</math> b...")
- 15:13, 31 August 2020 (diff | hist) . . (-15) . . 2020 CIME I Problems
- 15:12, 31 August 2020 (diff | hist) . . (+25) . . 2020 CIME I Problems
- 14:28, 31 August 2020 (diff | hist) . . (+9) . . 2020 AIME I Problems/Problem 15
- 14:28, 31 August 2020 (diff | hist) . . (+9) . . 2020 AIME I Problems
- 12:20, 31 August 2020 (diff | hist) . . (0) . . Christmas Invitational Mathematics Examination
- 12:20, 31 August 2020 (diff | hist) . . (-126) . . Christmas Invitational Mathematics Examination
- 12:19, 31 August 2020 (diff | hist) . . (+3,020) . . N Christmas Invitational Mathematics Examination (Created page with "The '''Christmas Invitational Mathematics Examination''' ('''CIME'''), like the ('''AIME'''), is the second exam in the series of exams used to challenge bright students on th...")
- 11:40, 31 August 2020 (diff | hist) . . (+60) . . N CIME (Redirected page to Christmas Invitational Mathematics Examination) (current) (Tag: New redirect)
- 11:34, 31 August 2020 (diff | hist) . . (+13) . . 2020 CIME I Problems/Problem 7
- 11:26, 31 August 2020 (diff | hist) . . (+13) . . 2020 CIME I Problems/Problem 1
- 11:26, 31 August 2020 (diff | hist) . . (+13) . . 2020 CIME I Problems/Problem 2
- 11:25, 31 August 2020 (diff | hist) . . (+13) . . 2020 CIME I Problems/Problem 5 (current)
- 11:24, 31 August 2020 (diff | hist) . . (0) . . 2020 CIME I Problems/Problem 5
- 11:23, 31 August 2020 (diff | hist) . . (-1) . . 2020 CIME I Problems/Problem 5
- 11:22, 31 August 2020 (diff | hist) . . (+1,010) . . 2020 CIME I Problems/Problem 5
- 10:54, 31 August 2020 (diff | hist) . . (+50) . . 2020 AMC 10A Problems/Problem 24
- 10:36, 31 August 2020 (diff | hist) . . (+1) . . 2020 CIME I Problems/Problem 10
- 10:35, 31 August 2020 (diff | hist) . . (+439) . . N 2020 CIME I Problems/Problem 10 (Created page with "==Problem 10== Let <math>1=d_1<d_2<\cdots<d_k=n</math> be the divisors of a positive integer <math>n</math>. Let <math>S</math> be the sum of all positive integers <math>n</ma...")
- 10:34, 31 August 2020 (diff | hist) . . (+15) . . 2020 CIME I Problems/Problem 9
- 10:33, 31 August 2020 (diff | hist) . . (+475) . . N 2020 CIME I Problems/Problem 9 (Created page with "==Problem 9== Let <math>ABCD</math> be a cyclic quadrilateral with <math>AB=6, AC=8, BD=5, CD=2</math>. Let <math>P</math> be the point on <math>\overline{AD}</math> such that...")
- 10:33, 31 August 2020 (diff | hist) . . (+1,021) . . N 2020 CIME I Problems/Problem 8 (Created page with "==Problem 8== A person has been declared the first to inhabit a certain planet on day <math>N=0</math>. For each positive integer <math>N=0</math>, if there is a positive numb...")
- 10:27, 31 August 2020 (diff | hist) . . (0) . . 2020 CIME I Problems/Problem 7
- 10:26, 31 August 2020 (diff | hist) . . (+503) . . N 2020 CIME I Problems/Problem 7 (Created page with "==Problem 7== For every positive integer <math>n</math>, define <cmath>f(n)=\frac{n}{1 \cdot 3 \cdot 5 \cdots (2n+1)}.</cmath> Suppose that the sum <math>f(1)+f(2)+\cdots+f(20...")
- 10:22, 31 August 2020 (diff | hist) . . (0) . . 2020 CIME I Problems/Problem 6
- 10:21, 31 August 2020 (diff | hist) . . (+217) . . N 2020 CIME I Problems/Problem 6 (Created page with "==Problem 6== Find the number of complex numbers <math>z</math> satisfying <math>|z|=1</math> and <math>z^{850}+z^{350}+1=0</math>. ==Solution== {{solution}} {{CIME box|year...")
- 10:17, 31 August 2020 (diff | hist) . . (+15) . . 2020 CIME I Problems
- 22:29, 30 August 2020 (diff | hist) . . (-7) . . CMC Problems and Solutions
- 21:27, 30 August 2020 (diff | hist) . . (+166) . . N CMC Problems and Solutions (Created page with "You can find problems and solutions from the math contests run by the Christmas Mathematics Competitions on the following pages: *CIME Problems and Solutions")
- 21:05, 30 August 2020 (diff | hist) . . (+416) . . N 2020 CIME I Problems/Problem 5 (Created page with "==Problem 5== Let <math>ABCD</math> be a rectangle with sides <math>AB>BC</math> and let <math>E</math> be the reflection of <math>A</math> over <math>\overline{BD}</math>. If...")
- 20:59, 30 August 2020 (diff | hist) . . (0) . . 2020 CIME I Problems/Problem 4
- 20:59, 30 August 2020 (diff | hist) . . (+496) . . N 2020 CIME I Problems/Problem 4 (Created page with "==Problem 4== There exists a unique positive real number <math>x</math> satisfying <cmath>x=\sqrt{x^2+\frac{1}{x^2}} - \sqrt{x^2-\frac{1}{x^2}}.</cmath> Given that <math>x</ma...")
- 20:51, 30 August 2020 (diff | hist) . . (+2) . . 2020 CIME I Problems/Problem 3
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