User contributions
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- 15:48, 4 June 2011 (diff | hist) . . (+52) . . m 2002 AMC 10B Problems/Problem 25 (→Problem)
- 15:46, 4 June 2011 (diff | hist) . . (+232) . . 2002 AMC 10B Problems/Problem 22
- 15:40, 4 June 2011 (diff | hist) . . (-49) . . 2002 AMC 10B Problems/Problem 21
- 15:26, 4 June 2011 (diff | hist) . . (+1,436) . . N 2002 AMC 10B Problems/Problem 5 (Created page with "== Problem 5 == Circles of radius <math>2</math> and <math>3</math> are externally tangent and are circumscribed by a third circle, as shown in the figure. Find the area of the ...")
- 15:18, 4 June 2011 (diff | hist) . . (-136) . . 2011 AMC 10B Problems/Problem 23
- 14:35, 4 June 2011 (diff | hist) . . (-16) . . m 2011 AMC 10B Problems/Problem 22
- 14:35, 4 June 2011 (diff | hist) . . (+2,883) . . 2011 AMC 10B Problems/Problem 22
- 14:03, 4 June 2011 (diff | hist) . . (+22) . . N File:2011AMC10B22.png (2011 AMC10B Problem 22) (current)
- 13:52, 4 June 2011 (diff | hist) . . (+2,219) . . N 2011 AMC 10B Problems/Problem 21 (Created page with "== Problem 21 == Brian writes down four integers <math>w > x > y > z</math> whose sum is <math>44</math>. The pairwise positive differences of these numbers are <math>1, 3, 4, 5...")
- 15:40, 30 May 2011 (diff | hist) . . (+1,791) . . 1951 AHSME Problems
- 02:21, 29 May 2011 (diff | hist) . . (+1,888) . . N 2011 AMC 10B Problems/Problem 12 (Created page with '== Problem 12 == Keiko walks once around a track at exactly the same constant speed every day. The sides of the track are straight, and the ends are semicircles. The track has a…')
- 01:54, 29 May 2011 (diff | hist) . . (+1,267) . . N 2011 AMC 10B Problems/Problem 8 (Created page with '== Problem 8 == At a certain beach if it is at least <math>80^{\circ} F</math> and sunny, then the beach will be crowded. On June 10 the beach was not crowded. What can be concl…')
- 19:36, 27 May 2011 (diff | hist) . . (+1,544) . . N 2007 AMC 10B Problems/Problem 9 (Created page with '==Problem 9== A cryptographic code is designed as follows. The first time a letter appears in a given message it is replaced by the letter that is <math>1</math> place to its ri…')
- 19:29, 27 May 2011 (diff | hist) . . (0) . . 2007 AMC 10B Problems/Problem 4 (→Solution)
- 19:28, 27 May 2011 (diff | hist) . . (+2,711) . . N 2007 AMC 10B Problems/Problem 19 (Created page with '==Problem 19== The wheel shown is spun twice, and the randomly determined numbers opposite the pointer are recorded. The first number is divided by <math>4,</math> and the secon…')
- 18:29, 27 May 2011 (diff | hist) . . (+944) . . N 2007 AMC 10B Problems/Problem 8 (Created page with '==Problem 8== On the trip home from the meeting where this AMC10 was constructed, the Contest Chair noted that his airport parking receipt had digits of the form <math>bbcac,</m…')
- 18:07, 27 May 2011 (diff | hist) . . (+1,102) . . N 2007 AMC 10B Problems/Problem 7 (Created page with '==Problem 7== All sides of the convex pentagon <math>ABCDE</math> are of equal length, and <math>\angle A= \angle B = 90^\circ.</math> What is the degree measure of <math>\angle…')
- 17:31, 27 May 2011 (diff | hist) . . (+1,145) . . N 2007 AMC 10B Problems/Problem 6 (Created page with '==Problem 6== The <math>2007 AMC10</math> will be scored by awarding <math>6</math> points for each correct response, <math>0</math> points for each incorrect response, and <mat…')
- 17:25, 27 May 2011 (diff | hist) . . (+852) . . N 2007 AMC 10B Problems/Problem 4 (Created page with '==Problem 4== The point <math>O</math> is the center of the circle circumscribed about <math>\triangle ABC,</math> with <math>\angle BOC=120^\circ</math> and <math>\angle AOB=14…')
- 17:14, 27 May 2011 (diff | hist) . . (+373) . . N 2007 AMC 10B Problems/Problem 2 (Created page with '==Problem 2== Define the operation <math>\star</math> by <math>a \star b = (a+b)b.</math> What is <math>(3 \star 5) - (5 \star 3)?</math> <math>\textbf{(A) } -16 \qquad\textbf{…')
- 17:06, 27 May 2011 (diff | hist) . . (+202) . . m 2007 AMC 10B Problems (→Problem 19)
- 16:58, 27 May 2011 (diff | hist) . . (+1,081) . . 2007 AMC 10B Problems (added picture to 19)
- 16:29, 27 May 2011 (diff | hist) . . (+789) . . 2007 AMC 10B Problems (added picture to 18)
- 16:13, 27 May 2011 (diff | hist) . . (+12,700) . . N 2007 AMC 10B Problems (no pictures yet)
- 15:10, 27 May 2011 (diff | hist) . . (+451) . . 2002 AMC 10B Problems (→Problem 24)
- 15:08, 27 May 2011 (diff | hist) . . (+342) . . 2002 AMC 10B Problems (→Problem 23)
- 15:06, 27 May 2011 (diff | hist) . . (+480) . . 2002 AMC 10B Problems (→Problem 21)
- 15:04, 27 May 2011 (diff | hist) . . (+283) . . 2002 AMC 10B Problems (→Problem 20)
- 15:03, 27 May 2011 (diff | hist) . . (+348) . . 2002 AMC 10B Problems (→Problem 19)
- 14:59, 27 May 2011 (diff | hist) . . (+65) . . m 2002 AMC 10B Problems
- 14:57, 27 May 2011 (diff | hist) . . (+818) . . 2002 AMC 10B Problems (→Problem 5)
- 14:43, 27 May 2011 (diff | hist) . . (+2) . . m 2002 AMC 10B Problems (→Problem 4)
- 14:42, 27 May 2011 (diff | hist) . . (+13) . . m 2002 AMC 10B Problems (→Problem 3)
- 14:42, 27 May 2011 (diff | hist) . . (+26) . . 2002 AMC 10B Problems (→Problem 2)
- 14:41, 27 May 2011 (diff | hist) . . (+40) . . m 2002 AMC 10B Problems (→Problem 1)
- 00:55, 27 May 2011 (diff | hist) . . (+4) . . 2003 AMC 10B Problems (→Problem 22)
- 00:55, 27 May 2011 (diff | hist) . . (+12,168) . . N 2003 AMC 10B Problems (no pictures yet)
- 19:55, 26 May 2011 (diff | hist) . . (+1,398) . . N 2011 AMC 10B Problems/Problem 19 (Created page with '== Problem 19 == What is the product of all the roots of the equation <cmath>\sqrt{5 | x | + 8} = \sqrt{x^2 - 16}.</cmath> <math> \textbf{(A)}\ -64 \qquad\textbf{(B)}\ -24 \qqu…')
- 19:35, 26 May 2011 (diff | hist) . . (+483) . . 2011 AMC 10B Problems (→Problem 17)
- 19:35, 26 May 2011 (diff | hist) . . (+202) . . 2011 AMC 10B Problems/Problem 17
- 19:02, 26 May 2011 (diff | hist) . . (+76) . . 2011 AMC 10B Problems (→Problem 8)
- 00:53, 26 May 2011 (diff | hist) . . (+1,546) . . N 2011 AMC 10B Problems/Problem 17 (Created page with '== Problem 17 == In the given circle, the diameter <math>\overline{EB}</math> is parallel to <math>\overline{DC}</math>, and <math>\overline{AB}</math> is parallel to <math>\ove…')
- 00:15, 26 May 2011 (diff | hist) . . (+1,130) . . 2011 AMC 10B Problems/Problem 18
- 23:30, 25 May 2011 (diff | hist) . . (+2,225) . . N 2011 AMC 10B Problems/Problem 16 (Created page with '== Problem 16 == A dart board is a regular octagon divided into regions as shown. Suppose that a dart thrown at the board is equally likely to land anywhere on the board. What i…')
- 21:03, 25 May 2011 (diff | hist) . . (+1,266) . . N 2011 AMC 10B Problems/Problem 15 (Created page with '== Problem 15 == Let <math>@</math> denote the "averaged with" operation: <math>a @ b = \frac{a+b}{2}</math>. Which of the following distributive laws hold for all numbers <math…')
- 20:50, 25 May 2011 (diff | hist) . . (+718) . . N 2011 AMC 10B Problems/Problem 14 (Created page with '== Problem 14 == A rectangular parking lot has a diagonal of <math>25</math> meters and an area of <math>168</math> square meters. In meters, what is the perimeter of the parkin…')
- 20:44, 25 May 2011 (diff | hist) . . (+852) . . N 2011 AMC 10B Problems/Problem 13 (Created page with '== Problem 13 == Two real numbers are selected independently at random from the interval <math>[-20, 10]</math>. What is the probability that the product of those numbers is gre…')
- 20:38, 25 May 2011 (diff | hist) . . (+326) . . 2011 AMC 10B Problems/Problem 11
- 20:29, 25 May 2011 (diff | hist) . . (+1,470) . . N 2011 AMC 10B Problems/Problem 9 (Created page with '== Problem 9 == The area of <math>\triangle</math><math>EBD</math> is one third of the area of <math>3-4-5</math> <math>\triangle</math><math>ABC</math>. Segment <math>DE</math>…')
- 20:09, 25 May 2011 (diff | hist) . . (+49) . . 2011 AMC 10B Problems (→Problem 9)
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