Discrete Mathematics
Problems related to graph theory, combinatorics, logic, etc.
Problems in this category
From a group of 5 male students and 8 female students who have good performance in writing poems, a ...
CombinatoricsPermutationsCombinationsCounting
2025/5/30
The problem states that there are 5 male students and 8 female students who have good poetry writing...
CombinatoricsCombinationsPermutationsFactorialsCounting Problems
2025/5/30
A restaurant offers meals with the following components: rice/noodle/potatoes, beef/pork/chicken, ve...
CombinatoricsCounting PrinciplesProduct Rule
2025/5/30
We are given the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. We want to form a 4-digit number using th...
CombinatoricsPermutationsCountingNumber TheoryDivisibility Rules
2025/5/28
We are given the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. We want to form a four-digit number using ...
CombinatoricsCountingPermutationsNumber TheoryDivisibility Rules
2025/5/28
We have the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. We want to form a four-digit number with distinct d...
CombinatoricsPermutationsCounting
2025/5/27
The problem states that we have the digits $0, 1, 2, 3, 4, 5, 6, 7, 8, 9$. We want to form four-digi...
CombinatoricsPermutationsCounting ProblemsNumber Theory (Divisibility)
2025/5/27
The problem states that there are 10 students volunteering for community work. The community leader ...
CombinatoricsCombinationsCounting
2025/5/27
We are given two sets $A = \{1, 2, 3\}$ and $B = \{a, b, c, d, e\}$. We need to solve the following ...
Set TheoryFunctionsInjective FunctionsCombinatoricsCounting
2025/5/27
The problem describes a survey of investors, where we are given the number of investors in stocks, m...
Set TheoryVenn DiagramsInclusion-Exclusion Principle
2025/5/27