A number pattern which increases (or decreases) by the same amount each time is called a linear sequence. The amount it increases or decreases by is known as the common difference.

Part of

So the sequence of numbers in the times table has a common difference of and an term of .

How do you find the answer in more complex sequences?

We know that the term should contain ā ā.

The times table is

The sequence is

Each term in the sequence is more than the corresponding term in the times table, so the term is .

- Question
What is the term of the sequence ?

The common difference is , so it must be related to the times table ( ).

The times table is

The sequence is

Every term in the sequence is more than the corresponding term in the times table, so the term is .