Number alchemy
- 100
What is the least common multiple of 6 and 8?
- 200
What is the greatest common divisor of 252 and 198?
- 300
What remainder does 2²⁰…
In the game - 400
How many positive…
In the game - 500
How many positive integers…
In the game
Science & tech
Maths puzzles quiz — Science & tech
The “Maths puzzles” quiz — Science & tech. It has 25 questions in five categories: Number alchemy, Algebra, Geometry, Chance & counting, Sequences & calculus. Questions get harder as the points go up, from 100 to 500.
A peek at the questions
The 100- and 200-point questions are open here. The rest show only their first words, and there are no answers: all of that is in the game itself.
Algebra
- 100
Solve 3x + 5 = 20. What is x?
- 200
What are the roots of x² − 5x + 6 = 0?
- 300
Given x + y…
In the game - 400
Solve log₂x + log₂(x…
In the game - 500
If x + 1/x…
In the game
Geometry
- 100
A right triangle has legs 5 and 12. What is the hypotenuse?
- 200
A square has side length 6. What is its diagonal length?
- 300
A circle has radius…
In the game - 400
A regular hexagon has…
In the game - 500
A triangle has side…
In the game
Chance & counting
- 100
A fair coin is tossed once. What is the probability of heads?
- 200
Two fair six-sided dice are rolled. What is the probability that their sum is 7?
- 300
How many ways can…
In the game - 400
There are 4 distinct…
In the game - 500
How many distinct 5-card…
In the game
Sequences & calculus
- 100
In the Fibonacci sequence 2, 3, 5, 8, 13, … what number comes next?
- 200
In the arithmetic sequence 4, 7, 10, 13, … what is the 10th term?
- 300
What is the sum…
In the game - 400
For f(x) = x³…
In the game - 500
Evaluate the definite…
In the game
Play this quiz
All 25 questions and the answers are in the game. Invite your class or friends with a link — guests need no account.
How it works
- Pick a quiz and press “Play”.
- Send students or friends the link — they join from a phone or a computer.
- Choose questions on the board, buzz in first and collect points.