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# What is the 15th term of the sequence 20, 16, 12

**Solution:**

The given __sequence__ is an arithmetic series with

First term a = 20

The __common difference__ d = 16 - (20) = 12 - 16 = -4

The nth term of an arithmetic series is given by the expression:

T_{n} = a + (n-1)d

T₁₅ = 20 + (15 - 1)(-4)

T₁₅ = 20+ 14(-4)

T₁₅ = 20 - 56 = -36

T₁₅ = - 36

## What is the 15th term of the sequence 20, 16, 12

**Summary:**

The 15th term of the sequence 20, 16, 12 is -36

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