The hundreds digit of (20!−15!)
What is 0?
Camden constructs a square window using 8 equal-size panes of glass, as shown. The ratio of the height to width for each pane is 5:2, and the borders around and between the panes are 2 inches wide. In inches, what is the side length of the square window?

What is 26?
Two points are randomly placed on a number line from -1 to 1. Find the probability that the origin lies between the two points.
What is 1/2?
Co-inventor of calculus and founder of classical mechanics
Who was Isaac Newton?
a^2 + b^2 = c^2
Pythagorean Theorem
The sum of all real numbers x such that |x2 - 12x + 34| = 2
What is 18?
The two legs of a right triangle, which are altitudes, have lengths 2√3 and 6. Find the length of the third altitude of the triangle.
What is 3?
Chloe chooses a real number uniformly at random from the interval [0, 2016]. Independently, Laurent chooses a real number uniformly at random from the interval [0, 4032]. What is the probability that Laurent's number is greater than Chloe's number?
What is 3/4?
The full name of the mathematician 2.71828… is named after.
Who is Leonhard Euler?
A polynomial with degree n must have n roots.
What is the Fundamental Theorem of Algebra?
Five positive consecutive integers starting with x have average y. Express in terms of x, the average of 5 consecutive integers that start with y.
What is x + 4?
A regular hexagon has side length 6. Congruent arcs with radius 3 are drawn with the center at each of the vertices, creating circular sectors as shown. The region inside the hexagon but outside the sectors is shaded as shown. Find the area of the shaded region.

What is 54√3 - 18π?
P(A|B) = ?
(There are 2 ways to complete the formula; you only need to give one.)
What is
P(A ∧ B) / P(B), or
P(B|A)P(A) / P(B)?
The first person to publish the Cartesian coordinate system, or 2D plane.
Who was René Descartes?
Name the method used to prove sqrt(2) is irrational.
What is proof by contradiction?
There are two values of a for which the equation 4x2 + ax + 8x + 9 = 0 has only one solution for x. What is the sum of these values of a?
What is -16?
Find x.
What is 2?
Four fair six-sided dice are rolled. Find the probability that at least three of the four dice show the same value.
What is 7/72?
The mathematician who proved the Fundamental Theorem of Algebra
Who was Carl Friedrich Gauss?
An unsolved hypothesis about the distribution of prime numbers and zeros of the zeta function.
What is the Riemann hypothesis?
The sequence log12162, log12x, log12y, log12z, log121250 is an arithmetic progression. What is x?
What is 270?
Mary divides a circle into 12 sectors. The central angles of these sectors, measured in degrees, are all integers and they form an arithmetic sequence. What is the degree measure of the smallest possible sector angle?
What is 8?
Three fair six-sided dice are rolled. Find the probability that the values shown on two of the dice sum to the value shown on the remaining die.
What is 5/24?
Fermat’s occupation besides mathematician.
What is a lawyer?
An unproved conjecture that states every integer greater than 2 can be expressed as the sum of two prime numbers.
What is the Goldbach Conjecture?