Take the complete 2024 AMC 10B as a timed practice test. You'll have 75 minutes to solve all 25 questions under realistic AMC conditions. Submit your test to see your official-style score and review detailed solutions.
In a long line of people arranged left to right, the 1013th person from the left is also the 1010th person from the right. How many people are in the line?
Balls numbered 1,2,3,… are deposited in 5 bins, labeled A, B, C, D, and E, using the following procedure. Ball 1 is deposited in bin A, and balls 2 and 3 are deposited in bin B. The next 3 balls are deposited in bin C, the next 4 in bin D, and so on, cycling back to bin A after balls are deposited in bin E. (For example, balls numbered 22,23,…,28 are deposited in bin B at step 7 of this process.) In which bin is ball 2024 deposited?
In the following expression, Melanie changed some of the plus signs to minus signs: 1+3+5+7+⋯+97+99 When the new expression was evaluated, it was negative. What is the least number of plus signs that Melanie could have changed to minus signs?
Quadrilateral ABCD is a parallelogram, and E is the midpoint of the side AD. Let F be the intersection of lines EB and AC. What is the ratio of the area of quadrilateral CDEF to the area of △CFB?
In the figure below WXYZ is a rectangle with WX=4 and WZ=8. Point M lies on XY, point A lies on YZ, and ∠WMA is a right angle. The areas of △WXM and △WAZ are equal. What is the area of △WMA?
A group of 100 students from different countries meet at a mathematics competition. Each student speaks the same number of languages, and, for every pair of students A and B, student A speaks some language that student B does not speak, and student B speaks some language that student A does not speak. What is the least possible total number of languages spoken by all the students?
A dartboard is the region B in the coordinate plane consisting of points (x,y) such that ∣x∣+∣y∣≤8. A target T is the region where (x2+y2−25)2≤49. A dart is thrown and lands at a random point in B. The probability that the dart lands in T can be expressed as nm⋅π, where m and n are relatively prime positive integers. What is m+n?
A list of 9 real numbers consists of 1,2.2,3.2,5.2,6.2, and 7, as well as x, y, and z, with x≤y≤z. The range of the list is 7, and the mean and the median are both positive integers. How many ordered triples (x,y,z) are possible?
Jerry likes to play with numbers. One day, he wrote all the integers from 1 to 2024 on the whiteboard. Then he repeatedly chose four numbers on the whiteboard, erased them, and replaced them by either their sum or their product. (For example, Jerry's first step might have been to erase 1, 2, 3, and 5, and then write either 11, their sum, or 30, their product, on the whiteboard.) After repeatedly performing this operation, Jerry noticed that all the remaining numbers on the whiteboard were odd. What is the maximum possible number of integers on the whiteboard at that time?
In a race among 5 snails, there is at most one tie, but that tie can involve any number of snails. For example, the result of the race might be that Dazzler is first; Abby, Cyrus, and Elroy are tied for second; and Bruna is fifth. How many different results of the race are possible?
In the following table, each question mark is to be replaced by "Possible" or "Not Possible" to indicate whether a nonvertical line with the given slope can contain the given number of lattice points (points both of whose coordinates are integers). How many of the 12 entries will be "Possible"? zero slopenonzero rational slopeirrational slopezero???exactly one???exactly two???more than two???
Three different pairs of shoes are placed in a row so that no left shoe is next to a right shoe from a different pair. In how many ways can these six shoes be lined up?
Two straight pipes (circular cylinders), with radii 1 and 41, lie parallel and in contact on a flat floor. The figure below shows a head-on view. What is the sum of the possible radii of a third parallel pipe lying on the same floor and in contact with both?
A group of 16 people will be partitioned into 4 indistinguishable 4-person committees. Each committee will have one chairperson and one secretary. The number of different ways to make these assignments can be written as 3rM, where r and M are positive integers and M is not divisible by 3. What is r?
Each of 27 bricks (right rectangular prisms) has dimensions a×b×c, where a, b, and c are pairwise relatively prime positive integers. These bricks are arranged to form a 3×3×3 block, as shown on the left below. A 28th brick with the same dimensions is introduced, and these bricks are reconfigured into a 2×2×7 block, shown on the right. The new block is 1 unit taller, 1 unit wider, and 1 unit deeper than the old one. What is a+b+c?
