How to solve it

A New Aspect of Mathematical Method








How to Solve It suggests the following steps when solving a mathematical problem: First, you have to understand the problem.
...
Second principle: Devise a plan
  1. Guess and check.
  2. Make an orderly list.
  3. Eliminate possibilities.
  4. Use symmetry.
  5. Consider special cases.
  6. Use direct reasoning.
  7. Solve an equation.