Three Nong problems

0-1 Knapsack Problems

16-body problems

2000 Year Problems

2D acoustic wave problems

3D contact problems

3-D crack problems

3D eddy current problems

3D elasticity problems

3-D elastodynamic crack problems

3N-body problems

Ⅲ-posed problems

A Brief Analysis of Farmer Problems Nowadays

A Few Problems

a string of internal problems

A Summary of Voltage-stabilizing Problems

ability of a variety of ways to solve problems

ability of analyzing problems and solving problems

ability to solve problems

abstract boundary value problems