Progression

Sequences And Series

A sequence (or progression) is a set of terms which are written in a definite order, obeying a certain rules.
Eg: 1, 3, 5, 7, …

A series is the sum of the terms of a sequence.
Eg: 1 + 3 + 5 + 7 + …

Example 1
Write down the next three terms in each of the following sequences.
(a) 14, 11, 8, 5, …
(b) 1, 2, 4, 8, …
(c) 1, 3, 7, 15, …

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