# User contributions

- 19:00, 25 November 2018 (diff | hist) . . (+14) . . 2017 USAJMO Problems/Problem 5 (→Solution)
- 19:00, 25 November 2018 (diff | hist) . . (-14) . . m 2017 USAJMO Problems/Problem 5 (→Solution)
- 16:30, 16 February 2018 (diff | hist) . . (+13) . . 2018 AMC 10B Problems/Problem 14
- 16:23, 16 February 2018 (diff | hist) . . (+304) . . N 2018 AMC 10B Problems/Problem 14 (Created page with "A list of <math>2018</math> positive integers has a unique mode, which occurs exactly <math>10</math> times. What is the least number of distinct values that can occur in the...")
- 16:16, 16 February 2018
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**(+528)** . . N 2018 AMC 10B Problems/Problem 8 (Created page with "Sara makes a staircase out of toothpicks as shown:<asy> size(150); defaultpen(linewidth(0.8)); path h = ellipse((0.5,0),0.45,0.015), v = ellipse((0,0.5),0.015,0.45); for(int i...") - 16:00, 16 February 2018 (diff | hist) . . (-44) . . 2018 AMC 10B Problems/Problem 15
- 16:00, 16 February 2018
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**(+1,416)** . . N 2018 AMC 10B Problems/Problem 15 (Created page with "A closed box with a square base is to be wrapped with a square sheet of wrapping paper. The box is centered on the wrapping paper with the vertices of the base lying on the mi...") - 15:42, 16 February 2018 (diff | hist) . . (+39) . . 2018 AMC 10B Problems/Problem 10
- 15:16, 16 February 2018
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**(+555)** . . N 2018 AMC 10B Problems/Problem 18 (Created page with "Three young brother-sister pairs from different families need tot take a trip in a van. These six children will occupy the second and third rows in the van, each of which has...") - 15:15, 16 February 2018 (diff | hist) . . (+494) . . N 2018 AMC 10B Problems/Problem 21 (Created page with "Mary chose an even <math>4</math>-digit number <math>n</math>. She wrote down all the divisors of <math>n</math> in increasing order from left to right: <math>1,2,...,\dfrac{n...")
- 15:14, 16 February 2018 (diff | hist) . . (+357) . . N 2018 AMC 10B Problems/Problem 20 (Created page with "A function <math>f</math> is defined recursively by <math>f(1)=f(2)=1</math> and <cmath>f(n)=f(n-1)-f(n-2)+n</cmath>for all integers <math>n \geq 3</math>. What is <math>f(201...")
- 15:14, 16 February 2018
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**(+584)** . . N 2018 AMC 10B Problems/Problem 12 (Created page with "Line segment <math>\overline{AB}</math> is a diameter of a circle with <math>AB=24</math>. Point <math>C</math>, not equal to <math>A</math> or <math>B</math>, lies on the cir...") - 15:13, 16 February 2018 (diff | hist) . . (+254) . . N 2018 AMC 10B Problems/Problem 5 (Created page with "How many subsets of <math>\{2,3,4,5,6,7,8,9\}</math> contain at least one prime number? <math>\textbf{(A)} \text{ 128} \qquad \textbf{(B)} \text{ 192} \qquad \textbf{(C)} \te...")
- 15:10, 16 February 2018 (diff | hist) . . (+1) . . 2018 AMC 10B Problems/Problem 6
- 15:09, 16 February 2018 (diff | hist) . . (+478) . . N 2018 AMC 10B Problems/Problem 6 (Created page with "A box contains <math>5</math> chips, numbered <math>1</math>, <math>2</math>, <math>3</math>, <math>4</math>, and <math>5</math>. Chips we drawn randomly one at a time without...")
- 15:09, 16 February 2018 (diff | hist) . . (+493) . . N 2018 AMC 10B Problems/Problem 9 (Created page with "The faces of each of <math>7</math> standard dice are labeled with the integers from <math>1</math> to <math>6</math>. Let <math>p</math> be the probabilities that when all <m...")
- 15:08, 16 February 2018 (diff | hist) . . (+2) . . 2018 AMC 10B Problems/Problem 7
- 15:08, 16 February 2018 (diff | hist) . . (0) . . 2018 AMC 10B Problems/Problem 7
- 15:07, 16 February 2018 (diff | hist) . . (+464) . . 2018 AMC 10B Problems/Problem 7
- 14:29, 16 February 2018
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**(+551)** . . N 2018 AMC 10B Problems/Problem 7 (Created page with "In the figure below, <math>N</math> congruent semicircles lie on the diameter of a large semicircle, with their diameters covering the diameter of the large semicircle with no...") - 14:07, 31 July 2017 (diff | hist) . . (+45) . . m MathCounts historical results (→Countdown Round Champions)
- 14:06, 31 July 2017 (diff | hist) . . (+29) . . m MathCounts historical results (→National Team Champions)
- 15:03, 7 May 2017 (diff | hist) . . (+1) . . m 2000 AMC 12 Problems/Problem 11 (→Solution)
- 15:03, 7 May 2017 (diff | hist) . . (+19) . . m 2000 AMC 12 Problems/Problem 11 (→Solution)
- 14:45, 7 May 2017 (diff | hist) . . (0) . . 1990 AHSME Problems/Problem 29 (→Solution 1)
- 14:45, 7 May 2017 (diff | hist) . . (+88) . . m 1990 AHSME Problems/Problem 29 (→Solution 1)
- 14:44, 7 May 2017 (diff | hist) . . (+104) . . 1990 AHSME Problems/Problem 29 (→Solution 1)
- 22:58, 2 May 2017 (diff | hist) . . (+2) . . m 2015 AMC 10A Problems/Problem 18 (→Solution)
- 09:44, 16 February 2017 (diff | hist) . . (0) . . 2017 AMC 10B Problems/Problem 6 (→Solution)