CS Problems
- P vs NP problem.
 - K-clique in a graph.
 - Boolean satisfiability.
 - Travelling Salesman problem.
 - Knapsack problem.
 - Linear Knapsack Problem.
 - Optimise branches and short branches.
 - Colour vertices of graph with k colours.
 - Halting Problem
 
Harder Problems
- Ackermann’s function.
 - Does a regular expression cover all regular expressions possible for its alphabet.