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To find the **Greatest Common Factor (GCF)** of the numbers **48, 12, and 3**, follow these steps:

### Step 1: List the Factors of Each Number

1. **Factors of 48:**
   $$
   1, 2, 3, 4, 6, 8, 12, 16, 24, 48
   $$

2. **Factors of 12:**
   $$
   1, 2, 3, 4, 6, 12
   $$

3. **Factors of 3:**
   $$
   1, 3
   $$

### Step 2: Identify the Common Factors

Find the numbers that appear in **all three lists**:

- **Common Factors:** $$1, 3$$

### Step 3: Determine the Greatest Common Factor

- The **largest** number in the common factors list is **3**.

### **Conclusion**

The **Greatest Common Factor (GCF)** of **48, 12, and 3** is **3**.

$$
\boxed{3}
$$
The greatest common factor of 48, 12, and 3 is 3.

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