30 September 2020

• 20:3620:36, 30 September 2020 diff hist +1,175 2016 AMC 8 Problems/Problem 25 No edit summary

25 February 2010

• 02:0302:03, 25 February 2010 diff hist +507 2010 AMC 12A Problems/Problem 9 No edit summary

24 February 2010

• 20:4520:45, 24 February 2010 diff hist −11 m 2010 AMC 12A Problems/Problem 18 No edit summary

12 February 2010

• 18:1518:15, 12 February 2010 diff hist +1,031 N 2010 AMC 12A Problems/Problem 8 Created page with '== Problem 8 == Triangle <math>ABC</math> has <math>AB=2 \cdot AC</math>. Let <math>D</math> and <math>E</math> be on <math>\overline{AB}</math> and <math>\overline{BC}</math>, r…'
• 17:4517:45, 12 February 2010 diff hist +3,731 N 2010 AMC 12A Problems/Problem 25 Created page with '== Problem 25 == Two quadrilaterals are considered the same if one can be obtained from the other by a rotation and a translation. How many different convex cyclic quadrilaterals…'
• 16:3616:36, 12 February 2010 diff hist +1,204 N 2010 AMC 12A Problems/Problem 22 Created page with '== Problem 22 == What is the minimum value of <math>\left|x-1\right| + \left|2x-1\right| + \left|3x-1\right| + \cdots + \left|119x - 1 \right|</math>? <math>\textbf{(A)}\ 49 \qq…'
• 15:4715:47, 12 February 2010 diff hist +2,212 N 2010 AMC 12A Problems/Problem 24 Created page with '== Problem 24 == Let <math>f(x) = \log_{10} \left(\sin(\pi x) \cdot \sin(2 \pi x) \cdot \sin (3 \pi x) \cdots \sin(8 \pi x)\right)</math>. The intersection of the domain of <math…'

11 February 2010

• 16:4216:42, 11 February 2010 diff hist −17 m 2010 AMC 12A Problems/Problem 17 →Solution
• 16:2516:25, 11 February 2010 diff hist +13 m 2010 AMC 12A Problems/Problem 15 →Solution
• 12:2512:25, 11 February 2010 diff hist +242 2010 AMC 12A Problems/Problem 3 →Problem 3
• 12:1512:15, 11 February 2010 diff hist +740 N 2010 AMC 12A Problems/Problem 10 Created page with '== Problem 10 == The first four terms of an arithmetic sequence are <math>p</math>, <math>9</math>, <math>3p-q</math>, and <math>3p+q</math>. What is the <math>2010^\text{th}</ma…'

10 February 2010

• 20:4720:47, 10 February 2010 diff hist +28 m 2010 AMC 12A Problems/Problem 19 →Solution
• 20:4120:41, 10 February 2010 diff hist +1,536 N 2010 AMC 12A Problems/Problem 20 Created page with '== Problem 20 == Arithmetic sequences <math>\left(a_n\right)</math> and <math>\left(b_n\right)</math> have integer terms with <math>a_1=b_1=1<a_2 \le b_2</math> and <math>a_n b_n…'
• 20:1720:17, 10 February 2010 diff hist +906 N 2010 AMC 12A Problems/Problem 5 Created page with '== Problem 5 == Halfway through a 100-shot archery tournament, Chelsea leads by 50 points. For each shot a bullseye scores 10 points, with other possible scores being 8, 4, 2, an…'
• 20:0920:09, 10 February 2010 diff hist +105 m 2010 AMC 12A Problems/Problem 13 →Solution
• 20:0820:08, 10 February 2010 diff hist +1,504 N 2010 AMC 12A Problems/Problem 13 Created page with '== Problem 13 == For how many integer values of <math>k</math> do the graphs of <math>x^2+y^2=k^2</math> and <math>xy = k</math> not intersect? <math>\textbf{(A)}\ 0 \qquad \tex…'
• 19:4119:41, 10 February 2010 diff hist +6 m 2010 AMC 12A Problems/Problem 9 →Solution
• 19:4019:40, 10 February 2010 diff hist +2,078 N 2010 AMC 12A Problems/Problem 16 Created page with '== Problem 16 == Bernardo randomly picks 3 distinct numbers from the set <math>\{1,2,3,4,5,6,7,8,9\}</math> and arranges them in descending order to form a 3-digit number. Silvia…'
• 16:5516:55, 10 February 2010 diff hist +1,744 N 2010 AMC 12A Problems/Problem 12 Created page with '== Problem 12 == In a magical swamp there are two species of talking amphibians: toads, whose statements are always true, and frogs, whose statements are always false. Four amphi…'
• 16:4416:44, 10 February 2010 diff hist +792 N 2010 AMC 12A Problems/Problem 9 Created page with '== Problem 9 == A solid cube has side length 3 inches. A 2-inch by 2-inch square hole is cut into the center of each face. The edges of each cut are parallel to the edges of the …'
• 16:3416:34, 10 February 2010 diff hist +865 N 2010 AMC 12A Problems/Problem 6 Created page with '== Problem 6 == A <math>\texti{palindrome}</math>, such as 83438, is a number that remains the same when its digits are reversed. The numbers <math>x</math> and <math>x+32</math>…'
• 16:3016:30, 10 February 2010 diff hist +477 2010 AMC 12A Problems/Problem 4 →Problem 4
• 16:1616:16, 10 February 2010 diff hist +225 2010 AMC 12A Problems/Problem 2 No edit summary
• 16:1016:10, 10 February 2010 diff hist +1,281 N 2010 AMC 12A Problems/Problem 19 Created page with '== Problem 19 == Each of 2010 boxes in a line contains a single red marble, and for <math>1 \le k \le 2010</math>, the box in the <math>k\text{th}</math> position also contains <…'
• 15:5215:52, 10 February 2010 diff hist +1,316 N 2010 AMC 12A Problems/Problem 18 Created page with '== Problem 18 == A 16-step path is to go from <math>(-4,-4)</math> to <math>(4,4)</math> with each step increasing either the <math>x</math>-coordinate or the <math>y</math>-coor…'
• 15:3615:36, 10 February 2010 diff hist +1,349 N 2010 AMC 12A Problems/Problem 15 Created page with '== Problem 15 == A coin is altered so that the probability that it lands on heads is less than <math>\frac{1}{2}</math> and when the coin is flipped four times, the probaiblity o…'
• 15:0915:09, 10 February 2010 diff hist +1,935 N 2010 AMC 12A Problems/Problem 21 Created page with '== Problem 21 == The graph of <math>y=x^6-10x^5+29x^4-4x^3+ax^2</math> lies above the line <math>y=bx+c</math> except at three values of <math>x</math>, where the graph and the l…'
• 14:3714:37, 10 February 2010 diff hist +66 2010 AMC 12A Problems/Problem 1 No edit summary