Sequences

Sequences & Patterns

Master arithmetic and geometric progressions, Fibonacci steps, and alphanumeric series patterns.

Lessons included in this chapter:

• Number Sequences: Check constant difference first (AP), then constant ratio (GP), then 2nd differences, then split odd/even positions.
• Number Patterns: Build a difference table. When differences become constant, you have found the sequence type.
• Arithmetic Progression: a(n) = a + (n−1)d. The nth term is the first term plus (n−1) jumps of size d.