(New) Arithmetic or Geometric Sequences

A sequence of numbers in which the difference between consecutive terms is constant.

A sequence of numbers in which each term after the first is found by multiplying the previous term by a fixed, non-zero number called the common ratio.

The constant amount that is added to each term to get the next term.

The constant factor by which we multiply to get from one term to the next.

Arithmetic (common difference d = 2).

Geometric (common ratio r = 3).

a_n = a_1 + (n-1)d, where a_1 is the first term and d is the common difference.

a_n = a_1 * r^(n-1), where a_1 is the first term and r is the common ratio.

25.

54.