22 February 2016

• 15:2415:24, 22 February 2016 diff hist −21 2016 AMC 10B Problems/Problem 1 No edit summary

21 February 2016

• 11:0011:00, 21 February 2016 diff hist +21 m 2016 AMC 10B Answer Key No edit summary
• 10:5810:58, 21 February 2016 diff hist −25 m 2016 AMC 10B Answer Key No edit summary
• 08:4908:49, 21 February 2016 diff hist +368 2016 AMC 10B Problems No edit summary
• 08:4608:46, 21 February 2016 diff hist +78 2016 AMC 10B Problems No edit summary
• 08:4408:44, 21 February 2016 diff hist +10,258 2016 AMC 10B Problems No edit summary
• 08:3808:38, 21 February 2016 diff hist +29 N 2016 AMC 10B Answer Key Created page with "DBDBD BCACD BDDDC EDEDC BACDA"
• 08:3608:36, 21 February 2016 diff hist +382 N 2016 AMC 10B Problems/Problem 14 Created page with "==Problem== How many squares whose sides are parallel to the axes and whose vertices have coordinates that are integers lie entirely within the region bounded by the line <ma..."
• 08:3508:35, 21 February 2016 diff hist +446 N 2016 AMC 10B Problems/Problem 24 Created page with "==Problem== How many four-digit integers <math>abcd</math>, with <math>a \not\equiv 0</math>, have the property that the three two-digit integers <math>ab<bc<cd</math> form a..."
• 08:3408:34, 21 February 2016 diff hist +452 N 2016 AMC 10B Problems/Problem 15 Created page with "==Problem== All the numbers <math>1, 2, 3, 4, 5, 6, 7, 8, 9</math> are written in a <math>3\times3</math> array of squares, one number in each square, in such a way that if t..."
• 08:3408:34, 21 February 2016 diff hist +561 N 2016 AMC 10B Problems/Problem 11 Created page with "==Problem== Carl decided to in his rectangular garden. He bought <math>20</math> fence posts, placed one on each of the four corners, and spaced out the rest evenly along the..."
• 08:3308:33, 21 February 2016 diff hist +258 N 2016 AMC 10B Problems/Problem 18 Created page with "==Problem== In how many ways can <math>345</math> be written as the sum of an increasing sequence of two or more consecutive positive integers? <math>\textbf{(A)}\ 1\qquad\t..."
• 08:3308:33, 21 February 2016 diff hist −100 2016 AMC 10B Problems/Problem 19 →Problem
• 08:3108:31, 21 February 2016 diff hist +663 2016 AMC 10B Problems/Problem 19 →Problem
• 08:3108:31, 21 February 2016 diff hist +524 N 2016 AMC 10B Problems/Problem 22 Created page with "==Problem== A set of teams held a round-robin tournament in which every team played every other team exactly once. Every team won <math>10</math> games and lost <math>10</mat..."
• 08:3008:30, 21 February 2016 diff hist +507 N 2016 AMC 10B Problems/Problem 17 Created page with "==Problem== All the numbers <math>2, 3, 4, 5, 6, 7</math> are assigned to the six faces of a cube, one number to each face. For each of the eight vertices of the cube, a prod..."
• 08:3008:30, 21 February 2016 diff hist +416 N 2016 AMC 10B Problems/Problem 25 Created page with "==Problem== Let <math>f(x)=\sum_{k=2}^{10}(\lfloor kx \rfloor -k \lfloor x \rfloor)</math>, where <math>\lfloor r \rfloor</math> denotes the greatest integer less than or equ..."
• 08:2908:29, 21 February 2016 diff hist +663 N 2016 AMC 10B Problems/Problem 23 Created page with "==Problem== In regular hexagon <math>ABCDEF</math>, points <math>W</math>, <math>X</math>, <math>Y</math>, and <math>Z</math> are chosen on sides <math>\overline{BC}</math>, ..."
• 08:2908:29, 21 February 2016 diff hist +267 N 2016 AMC 10B Problems/Problem 3 Created page with "==Problem== Let <math>x=-2016</math>. What is the value of <math>\bigg|</math> <math>|x|-x|-|x|</math> <math>\bigg|</math> <math>-x</math>? <math>\textbf{(A)}\ -2016\qquad\t..."
• 08:2808:28, 21 February 2016 diff hist +191 N 2016 AMC 10B Problems/Problem 8 Created page with "==Problem== What is the tens digit of <math>2015^{2016}-2017?</math> <math>\textbf{(A)}\ 0 \qquad \textbf{(B)}\ 1 \qquad \textbf{(C)}\ 3 \qquad \textbf{(D)}\ 5 \qquad \textb..."
• 08:2808:28, 21 February 2016 diff hist +207 N 2016 AMC 10B Problems/Problem 21 Created page with "==Problem== What is the area of the region enclosed by the graph of the equation <math>x^2+y^2=|x|+|y|?</math> <math>(A) \pi+\sqrt{2} (B) \pi+2 (C) \pi+2\sqrt{2} (D) 2\pi+\s..."
• 08:2808:28, 21 February 2016 diff hist +456 N 2016 AMC 10B Problems/Problem 20 Created page with "==Problem== A dilatation of the plane—that is, a size transformation with a positive scale factor—sends the circle of radius <math>2</math> centered at <math>A(2,2)</math..."
• 08:2708:27, 21 February 2016 diff hist +513 N 2016 AMC 10B Problems/Problem 13 Created page with "==Problem== At Megapolis Hospital one year, multiple-birth statistics were as follows: Sets of twins, triplets, and quadruplets accounted for <math>1000</math> of the babies ..."
• 08:2708:27, 21 February 2016 diff hist +307 N 2016 AMC 10B Problems/Problem 5 Created page with "==Problem== The mean age of Amanda's <math>4</math> cousins is <math>8</math>, and their median age is <math>5</math>. What is the sum of the ages of Amanda's youngest and ol..."
• 08:2608:26, 21 February 2016 diff hist +526 N 2016 AMC 10B Problems/Problem 10 Created page with "==Problem== A thin piece of wood of uniform density in the shape of an equilateral triangle with side length <math>3</math> inches weighs <math>12</math> ounces. A second pie..."
• 08:2608:26, 21 February 2016 diff hist +355 N 2016 AMC 10B Problems/Problem 6 Created page with "==Problem== Laura added two three-digit positive integers. All six digits in these numbers are different. Laura's sum is a three-digit number <math>S</math>. What is the smal..."
• 08:2508:25, 21 February 2016 diff hist +355 N 2016 AMC 10B Problems/Problem 7 Created page with "==Problem== The ratio of the measures of two acute angles is <math>5:4</math>, and the complement of one of these two angles is twice as large as the complement of the other...."
• 08:2408:24, 21 February 2016 diff hist +612 N 2016 AMC 10B Problems/Problem 19 Created page with "==Problem== Rectangle <math>ABCD</math> has <math>AB=5</math> and <math>BC=4</math>. Point <math>E</math> lies on line <math>AB</math> so that <math>EB=1</math>, point <math>..."
• 08:2408:24, 21 February 2016 diff hist +419 N 2016 AMC 10B Problems/Problem 9 Created page with "==Problem== All three vertices of <math>\bigtriangleup ABC</math> lie on the parabola defined by <math>y=x^2</math>, with <math>A</math> at the origin and <math>\overline{BC}..."
• 08:2308:23, 21 February 2016 diff hist +291 N 2016 AMC 10B Problems/Problem 12 Created page with "==Problem== Two different numbers are selected at random from <math>( 1, 2, 3, 4, 5)</math> and multiplied together. What is the probability that the product is even? <math>..."
• 08:2308:23, 21 February 2016 diff hist +345 N 2016 AMC 10B Problems/Problem 16 Created page with "==Problem== The sum of an infinite geometric series is a positive number <math>S</math>, and the second term in the series is <math>1</math>. What is the smallest possible va..."
• 08:2208:22, 21 February 2016 diff hist +13 2016 AMC 10B Problems/Problem 4 No edit summary
• 08:2108:21, 21 February 2016 diff hist +13 2016 AMC 10B Problems/Problem 2 No edit summary
• 08:2108:21, 21 February 2016 diff hist +13 2016 AMC 10B Problems/Problem 1 No edit summary
• 08:2008:20, 21 February 2016 diff hist +580 N 2016 AMC 10B Problems/Problem 4 Created page with "Zoey read <math>15</math> books, one at a time. The first book took her <math>1</math> day to read, the second book took her <math>2</math> days to read, the third book took h..."
• 08:1908:19, 21 February 2016 diff hist +229 N 2016 AMC 10B Problems/Problem 2 Created page with "If <math>n\heartsuit m=n^3m^2</math>, what is <math>\frac{2\heartsuit 4}{4\heartsuit 2}</math>? <math>\textbf{(A)}\ \frac{1}{4}\qquad\textbf{(B)}\ \frac{1}{2}\qquad\textbf{(C..."
• 08:1708:17, 21 February 2016 diff hist +228 N 2016 AMC 10B Problems/Problem 1 Created page with "What is the value of <math>\frac{2a^{-1}+\frac{a^{-1}}{2}}{a}</math> when <math>a= \frac{1}{2}</math>? <math>\textbf{(A)}\ 1\qquad\textbf{(B)}\ 2\qquad\textbf{(C)}\ \frac{5}{..."
• 08:1508:15, 21 February 2016 diff hist +1,234 2016 AMC 10B No edit summary