User contributions
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- 18:25, 9 February 2019 (diff | hist) . . (+65) . . 2019 AMC 10A Problems/Problem 22
- 18:24, 9 February 2019 (diff | hist) . . (+57) . . 2019 AMC 10A Problems/Problem 22
- 18:19, 9 February 2019 (diff | hist) . . (+75) . . 2019 AMC 10A Problems/Problem 2
- 18:19, 9 February 2019 (diff | hist) . . (+1,989) . . 2019 AMC 10A Problems/Problem 22
- 18:05, 9 February 2019 (diff | hist) . . (+929) . . N 2019 AMC 10A Problems/Problem 23 (Created page with "==Problem== Travis has to babysit the terrible Thompson triplets. Knowing that they love big numbers, Travis devises a counting game for them. First Tadd will say the number...")
- 18:05, 9 February 2019 (diff | hist) . . (+351) . . N 2019 AMC 10A Problems/Problem 19 (Created page with "==Problem== What is the least possible value of <cmath>(x+1)(x+2)(x+3)(x+4)+2019</cmath>where <math>x</math> is a real number? <math>\textbf{(A) } 2017 \qquad\textbf{(B) } 2...")
- 18:04, 9 February 2019 (diff | hist) . . (+508) . . N 2019 AMC 10A Problems/Problem 17 (Created page with "==Problem== A child builds towers using identically shaped cubes of different color. How many different towers with a height <math>8</math> cubes can the child build with <ma...")
- 18:03, 9 February 2019 (diff | hist) . . (+742) . . N 2019 AMC 10A Problems/Problem 13 (Created page with "==Problem== Let <math>\Delta ABC</math> be an isosceles triangle with <math>BC = AC</math> and <math>\angle ACB = 40^{\circ}</math>. Contruct the circle with diameter <math>\...")
- 18:02, 9 February 2019 (diff | hist) . . (+446) . . 2019 AMC 12A Problems/Problem 1
- 17:57, 9 February 2019 (diff | hist) . . (+1,218) . . 2019 AMC 12A Problems/Problem 21
- 17:44, 9 February 2019 (diff | hist) . . (+357) . . N 2019 AMC 12A Problems/Problem 2 (Created page with "==Problem== Suppose <math>a</math> is <math>150\%</math> of <math>b</math>. What percent of <math>a</math> is <math>3b</math>? <math>\textbf{(A) } 50 \qquad \textbf{(B) } 66...")
- 17:43, 9 February 2019 (diff | hist) . . (+44) . . N 2019 AMC 12A Problems/Problem 4 (Redirected page to 2019 AMC 10A Problems/Problem 5) (current) (Tag: New redirect)
- 17:43, 9 February 2019 (diff | hist) . . (+220) . . 2019 AMC 10A Problems/Problem 5
- 17:41, 9 February 2019 (diff | hist) . . (+45) . . N 2019 AMC 12A Problems/Problem 8 (Redirected page to 2019 AMC 10A Problems/Problem 14) (current) (Tag: New redirect)
- 17:41, 9 February 2019 (diff | hist) . . (+556) . . N 2019 AMC 10A Problems/Problem 14 (Created page with "{{duplicate|2019 AMC 10A #14 and 2019 AMC 12A #8}} For a set of four distinct lines in a plane, there are exactly <math>N<...")
- 17:40, 9 February 2019 (diff | hist) . . (+45) . . N 2019 AMC 12A Problems/Problem 7 (Redirected page to 2019 AMC 10A Problems/Problem 12) (current) (Tag: New redirect)
- 17:39, 9 February 2019 (diff | hist) . . (+960) . . N 2019 AMC 10A Problems/Problem 12 (Created page with "{{duplicate|2019 AMC 10A #12 and 2019 AMC 12A #7}} ==Problem== Melanie computes the mean <math>\mu</math>, the median <ma...")
- 17:36, 9 February 2019 (diff | hist) . . (+90) . . 2019 AMC 10A Problems/Problem 11
- 17:33, 9 February 2019 (diff | hist) . . (+508) . . N 2019 AMC 10A Problems/Problem 10 (Created page with "==Problem== A rectangular floor that is <math>10</math> feet wide and <math>17</math> feet long is tiled with <math>170</math> one-foot square tiles. A bug walks from one cor...")
- 17:33, 9 February 2019 (diff | hist) . . (+463) . . N 2019 AMC 10A Problems/Problem 9 (Created page with "==Problem== What is the greatest three-digit positive integer <math>n</math> for which the sum of the first <math>n</math> positive integers is <math>\underline{not}</math> a...")
- 17:31, 9 February 2019 (diff | hist) . . (+1,165) . . 2019 AMC 12A Problems
- 17:28, 9 February 2019 (diff | hist) . . (+44) . . N 2019 AMC 12A Problems/Problem 6 (Redirected page to 2019 AMC 10A Problems/Problem 8) (current) (Tag: New redirect)
- 17:27, 9 February 2019 (diff | hist) . . (+1,326) . . N 2019 AMC 10A Problems/Problem 8 (Created page with "{{duplicate|2019 AMC 10A #8 and 2019 AMC 12A #6}} ==Problem== The figure below shows line <math>\ell</math> with a regula...")
- 17:25, 9 February 2019 (diff | hist) . . (+44) . . N 2019 AMC 12A Problems/Problem 5 (Redirected page to 2019 AMC 10A Problems/Problem 7) (current) (Tag: New redirect)
- 17:25, 9 February 2019 (diff | hist) . . (+580) . . N 2019 AMC 10A Problems/Problem 7 (Created page with "{{duplicate|2019 AMC 10A #7 and 2019 AMC 12A #5}} ==Problem== Two lines with slopes <math>\dfrac{1}{2}</math> and <math>2...")
- 17:24, 9 February 2019 (diff | hist) . . (+579) . . N 2019 AMC 10A Problems/Problem 6 (Created page with "==Problem== For how many of the following types of quadrilaterals does there exist a point in the plane of the quadrilateral that is equidistant from all four vertices of the...")
- 17:23, 9 February 2019 (diff | hist) . . (+44) . . N 2019 AMC 12A Problems/Problem 3 (Redirected page to 2019 AMC 10A Problems/Problem 4) (current) (Tag: New redirect)
- 17:22, 9 February 2019 (diff | hist) . . (+745) . . N 2019 AMC 10A Problems/Problem 4 (Created page with "{{duplicate|2019 AMC 10A #4 and 2019 AMC 12A #3}} ==Problem== A box contains <math>28</math> red balls, <math>20</math> g...")
- 17:20, 9 February 2019 (diff | hist) . . (+443) . . N 2019 AMC 10A Problems/Problem 3 (Created page with "==Problem== Ana and Bonita were born on the same date in different years, <math>n</math> years apart. Last year Ana was <math>5</math> times as old as Bonita. This year Ana's...")
- 17:19, 9 February 2019 (diff | hist) . . (+45) . . N 2019 AMC 12A Problems/Problem 9 (Redirected page to 2019 AMC 10A Problems/Problem 15) (current) (Tag: New redirect)
- 17:19, 9 February 2019 (diff | hist) . . (+766) . . N 2019 AMC 10A Problems/Problem 15 (Created page with "{{duplicate|2019 AMC 10A #15 and 2019 AMC 12A #9}} ==Problem== A sequence of numbers is defined recursively by <math>a_1...")
- 17:17, 9 February 2019 (diff | hist) . . (+45) . . N 2019 AMC 12A Problems/Problem 10 (Redirected page to 2019 AMC 10A Problems/Problem 16) (current) (Tag: New redirect)
- 17:17, 9 February 2019 (diff | hist) . . (+1,299) . . N 2019 AMC 10A Problems/Problem 16 (Created page with "{{duplicate|2019 AMC 10A #16 and 2019 AMC 12A #10}} ==Problem== The figure below shows <math>13</math> circles of radius...")
- 17:15, 9 February 2019 (diff | hist) . . (+45) . . N 2019 AMC 12A Problems/Problem 11 (Redirected page to 2019 AMC 10A Problems/Problem 18) (current) (Tag: New redirect)
- 17:15, 9 February 2019 (diff | hist) . . (+597) . . N 2019 AMC 10A Problems/Problem 18 (Created page with "{{duplicate|2019 AMC 10A #18 and 2019 AMC 12A #11}} ==Problem== For some positive integer <math>k</math>, the repeating b...")
- 17:13, 9 February 2019 (diff | hist) . . (+433) . . N 2019 AMC 12A Problems/Problem 12 (Created page with "==Problem== Positive real numbers <math>x \neq 1</math> and <math>y \neq 1</math> satisfy <math>\log_2{x} = \log_y{16}</math> and <math>xy = 64</math>. What is <math>(\log_2{...")
- 17:12, 9 February 2019 (diff | hist) . . (+412) . . N 2019 AMC 12A Problems/Problem 13 (Created page with "==Problem== How many ways are there to paint each of the integers <math>2, 3, \dots, 9</math> either red, green, or blue so that each number has a different color from each o...")
- 17:07, 9 February 2019 (diff | hist) . . (+429) . . N 2019 AMC 12A Problems/Problem 14 (Created page with "==Problem== For a certain complex number <math>c</math>, the polynomial <cmath> P(x) = (x^2 - 2x + 2)(x^2 - cx + 4)(x^2 - 4x + 8)</cmath>has exactly 4 distinct roots. What is...")
- 17:05, 9 February 2019 (diff | hist) . . (+1,595) . . N 2019 AMC 12A (Created page with "'''2019 AMC 12A''' problems and solutions. The test was held on February 7, 2019. *2019 AMC 12A Problems *2019 AMC 12A Answer Key **2019 AMC 12A Problems/Problem 1...") (current)
- 17:03, 9 February 2019 (diff | hist) . . (+70) . . AMC 12 Problems and Solutions
- 17:02, 9 February 2019 (diff | hist) . . (+572) . . N 2019 AMC 12A Problems/Problem 15 (Created page with "==Problem== Positive real numbers <math>a</math> and <math>b</math> have the property that <cmath>\sqrt{\log{a}} + \sqrt{\log{b}} + \log \sqrt{a} + \log \sqrt{b} = 100</cmath...")
- 17:01, 9 February 2019 (diff | hist) . . (+2,078) . . 2019 AMC 10A Problems
- 17:00, 9 February 2019 (diff | hist) . . (+4,021) . . 2019 AMC 10A Problems
- 16:56, 9 February 2019 (diff | hist) . . (+642) . . 2019 AMC 10A Problems/Problem 24
- 16:55, 9 February 2019 (diff | hist) . . (+45) . . N 2019 AMC 12A Problems/Problem 16 (Redirected page to 2019 AMC 10A Problems/Problem 20) (current) (Tag: New redirect)
- 16:54, 9 February 2019 (diff | hist) . . (+658) . . N 2019 AMC 10A Problems/Problem 20 (Created page with "{{duplicate|2019 AMC 10A #20 and 2019 AMC 12A #16}} ==Problem== The numbers <math>1,2,\dots,9</math> are randomly placed...")
- 16:52, 9 February 2019 (diff | hist) . . (+682) . . N 2019 AMC 12A Problems/Problem 17 (Created page with "==Problem== Let <math>s_k</math> denote the sum of the <math>\textit{k}</math>th powers of the roots of the polynomial <math>x^3-5x^2+8x-13</math>. In particular, <math>s_0=3...")
- 16:52, 9 February 2019 (diff | hist) . . (+45) . . N 2019 AMC 12A Problems/Problem 18 (Redirected page to 2019 AMC 10A Problems/Problem 21) (current) (Tag: New redirect)
- 16:51, 9 February 2019 (diff | hist) . . (+695) . . N 2019 AMC 10A Problems/Problem 21 (Created page with "{{duplicate|2019 AMC 10A #21 and 2019 AMC 12A #18}} ==Problem== A sphere with center <math>O</math> has radius <math>6</m...")
- 16:50, 9 February 2019 (diff | hist) . . (+465) . . N 2019 AMC 12A Problems/Problem 19 (Created page with "==Problem== In <math>\triangle ABC</math> with integer side lengths, <cmath>\cos A=\frac{11}{16}, \qquad \cos B= \frac{7}{8}, \qquad \text{and} \qquad\cos C=-\frac{1}{4}.</cm...")
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