How to prepare:We will be running a series of webinars with two-time International Math Olympiad (IMO) winner Dr. Hayk Sedrakyan to dive into the most challenging math problems that appear in AMC 8 competitions. During these interactive and engaging webinar, Dr. Sedrakyan will work through ...
units are arranged in increasing size order so that their left edges and bottom edges align. The squares alternate in the color pattern white-gray-white-gray, respectively, as shown in the figure. What is the area of the visible gray region in square units? Problem 4 When Yunji added all ...
\o 2005 AMC 10A Problems/Problem 1Solution Let be the distance in miles that Mike rode. Since Josh rode for twice the length of time as Mike and at four-fifths of Mikes rate, he rode miles. Since their combined distance was miles, Problem 8 In the figure, the length of side of ...
Problem 8 Ricardo has20202020coins, some of which are pennies (11-cent coins) and the rest of which are nickels (55-cent coins). He has at least one penny and at least one nickel. What is the difference in cents between the greatest possible and least possible amounts of money that Ri...
AMC 8 Problems--2000 美国数学竞赛题.doc,Problem 1 Aunt Anna is years old. Caitlin is years younger than Brianna, and Brianna is half as old as Aunt Anna. How old is Caitlin? Problem 2 Which of these numbers is less than its reciprocal? Problem 3 How many
2005 AMC 10B Problems Problem 1 A scout troop buys 1000 candy bars at a price of five for $2. They sell all the candy bars at a price of two for $1. What was the profit, in dollars? (A)100 (B)200 (C)300 (D)400 (E)500 Problem 2 A positive number has the property that ...
2005 AMC 10A 2005 AMC 10A Problems Problem 1 While eating out, Mike and Joe each tipped their server 2 dollars. Mike tipped 10% of his bill and Joe tipped 20% of his bill. What was the difference, in dollars between their bills? (A)2 (B)4 (C)5 (D)10 (E)20 Problem 2 For ...
Page 4USA AMC 8 2002 Z Y X4 3 (A)X+Z=W+Y (B)W+X=Z (C) 3X+4Y=5Z (D)X+W=12(Y+Z) (E)X+Y=Z 17 In a mathematics contest with ten problems, a student gains 5 points for a correct answer and loses 2 points for an incorrect answer. If Olivia answered every problem and...
8Problems7,8and9areaboutthesekites. Genevieveputsbracingonherlargekiteintheformofacrossconnectingoppositecorners ofthekite.Howmanyinchesofbracingmaterialdoessheneed? (A)30(B)32(C)35(D)38(E)39 9Problems7,8and9areaboutthesekites. Page2 USA ...
Problem 8 Mr. Garcia asked the members of his health class how many days last week they exercised for at least 30 minutes. The results are summarized in the following bar graph, where the heights of the bars represent the number of students. 9 What was the mean number of days of...