Write the given number in roman system.
217

Answer

To convert the number 217 into the Roman numeral system, we can follow these steps:

### Step-by-Step Solution:

1. **Break Down the Number**:
Start by breaking down the number 217 into its components. We can express 217 as:
\[ 217 = 200 + 17 \]

2. **Convert 200 to Roman Numerals**:
The Roman numeral for 100 is "C". Therefore, 200 can be represented as:
\[ 200 = C + C = CC \]

3. **Convert 17 to Roman Numerals**:
Next, we need to convert 17. We can break down 17 into:
\[ 17 = 10 + 5 + 2 \]
- The Roman numeral for 10 is "X".
- The Roman numeral for 5 is "V".
- The Roman numeral for 2 is "II" (which is "I" + "I").

Thus, we can represent 17 as:
\[ 17 = X + V + II = XVII \]

4. **Combine the Roman Numerals**:
Now, we combine the Roman numerals for 200 and 17:
\[ 217 = CC + XVII = CCXVII \]

### Final Answer:
Therefore, the number 217 in Roman numerals is:
\[ \text{CCXVII} \]