Riddles
A bat and a ball cost $1.10 total. The bat costs $1 more than the ball. How much does the ball cost?
5 cents
How many integers from 1 to 200 are divisible by 6?
33
A broad branch of mathematics that substitutes letters or symbols for unknown numbers to solve equations and describe relationships between quantities.
Algebra
18 x 12 = ?
216
You can divide 30 by half and add 10. What do you get?
70
A triangle has side lengths 5, 12, 13. Find the area.
30
The mathematical study of continuous change, rates of change, and the accumulation of quantities, such as areas or volumes
Calculus
999 − 458 = ?
541
Two fathers and two sons go fishing and catch 3 fish total. Each person gets one fish. How is this possible?
One person is both a father and a son
What is the last digit of 3^2026
9
The branch of mathematics focusing on the study of vectors, vector spaces (linear spaces), and linear transformations
Linear Algebra
132 + 122
313
I am a number less than 10. If you flip me upside down, I become larger. What number am I?
6
A classroom has 30 students. Every student shakes hands with every other student exactly once. How many handshakes occur?
435
The study of mathematical models of strategic interaction
game theory
1234+4321−3333
2222
What comes next in the sequence?
1, 11, 21, 1211, 111221, ?
312211
What single digit appears most often between 1 and 1000(inclusive)?
1
a branch of mathematics and computer science that studies how networks of objects are connected
graph theory
15×16×17−163
-16