Which term of the sequence `20 ,19 1/4, 18 1/2, 17 3/4,dot` is the first negative term?

Explanation

To find the first negative term of the sequence \(20, 19 \frac{1}{4}, 18 \frac{1}{2}, 17 \frac{3}{4}, \ldots\), we can follow these steps:

### Step 1: Identify the sequence type
The given sequence is:
- \(A_1 = 20\)
- \(A_2 = 19 \frac{1}{4} = 19.25\)
- \(A_3 = 18 \frac{1}{2} = 18.5\)
- \(A_4 = 17 \frac{3}{4} = 17.75\)
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