Math & Logic Trivia
Primes, pi, geometry, famous theorems and the mathematicians behind them, plus a few logic puzzles to keep you honest. Some questions you'll answer from memory; some you'll want to work out.
Type the number or the term — digits and words both count. Every question comes with a short fact.
- 230questions
- 61easy
- 47medium
- 122hard
What's covered
- Numbers
- Geometry
- Famous theorems
- Mathematicians
- Logic
- Puzzles
Math & Logic Trivia: sample questions
Answer in your head, then tap to check. In the game you type it.
- easy
What is 3 cubed (3 x 3 x 3)?
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27
A cubed number is called that because it equals the volume of a cube whose sides are that length.
- easy
What is the name of the mathematical rule stating that, in a right triangle, the square of the longest side equals the sum of the squares of the other two sides?
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Pythagorean theorem
Whole-number solutions like 3-4-5 that satisfy this equation are called Pythagorean triples.
- medium
What statistical measure, symbolized by the Greek letter sigma, describes how spread out data values are from the mean?
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Standard deviation
Standard deviation is simply the square root of another common measure of spread called the variance.
- medium
What is the largest prime number that has only one digit?
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7
The prime numbers below ten are 2, 3, 5, and 7, making 7 the largest single-digit prime.
- hard
In linear algebra, what single scalar value, computed from a square matrix's entries, tells you the matrix is invertible whenever it is nonzero?
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Determinant
A matrix with a determinant of zero is called singular, meaning it squashes space down a dimension and can never be undone by an inverse transformation.
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