Number Patterns

Number Patterns

1. Arithmetic

   • First difference are the same
   • Tn=a+(n-1)d
   • Sn=n/2[2n+(n-1)]
   • A=First term D=Common Difference
   • straight line graph

2. Quadratic

   • 2nd differences are the same

3. Cubic

   • 3rd difference

4. Exponential

   • Doubling or trebling or halfing