MathDB

3

Part of 2020 BMT Fall

Problems(5)

BMT Algebra #3 - Degree 2021 Polynomial

Source:

10/11/2020
The graph of the degree 20212021 polynomial P(x)P(x), which has real coefficients and leading coefficient 11, meets the xx-axis at the points (1,0),(2,0),(3,0),,(2020,0)(1,0),\, (2,0),\,(3,0),\dots,\, (2020,0) and nowhere else. The mean of all possible values of P(2021)P(2021) can be written in the form a!/ba!/b, where aa and bb are positive integers and aa is as small as possible. Compute a+ba+b.
Bmtalgebrapolynomial
BMT 2020 Fall - Geometry 3

Source:

12/30/2021
Right triangular prism ABCDEFABCDEF with triangular faces ABC\vartriangle ABC and DEF\vartriangle DEF and edges AD\overline{AD}, BE\overline{BE}, and CF\overline{CF} has ABC=90o\angle ABC = 90^o and EAB=CAB=60o\angle EAB = \angle CAB = 60^o . Given that AE=2AE = 2, the volume of ABCDEFABCDEF can be written in the form mn\frac{m}{n} , where mm and nn are relatively prime positive integers. Compute m+nm + n. https://cdn.artofproblemsolving.com/attachments/4/7/25fbe2ce2df50270b48cc503a8af4e0c013025.png
geometry
shortest path for an ant on surface of cube 2020 BMT Team 3

Source:

1/7/2022
An ant is at one corner of a unit cube. If the ant must travel on the box’s surface, the shortest distance the ant must crawl to reach the opposite corner of the cube can be written in the form a\sqrt{a}, where aa is a positive integer. Compute aa.
geometry3D geometrycube
2020 BMT Individual 3

Source:

1/9/2022
At Zoom University, people’s faces appear as circles on a rectangular screen. The radius of one’s face is directly proportional to the square root of the area of the screen it is displayed on. Haydn’s face has a radius of 22 on a computer screen with area 3636. What is the radius of his face on a 16×916 \times 9 computer screen?
algebrageometry
2020 BMT Discrete #3

Source:

3/10/2024
Compute the remainder when 98!98! is divided by 101101.
number theory