# What is the 20th term of the arithmetic sequence 2, –4, –10, … ?

##### 1 Answer

Feb 8, 2016

#### Answer:

After the first term you obviously subtract

#### Explanation:

At the 20th term you must have done this 19 times.

So the 20th term is

**Watch it!**

Most of the times the first term is called

This means that the 20th term is then

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