Write the following in Hindu-Arabic numeral.
CM

Answer

To convert the Roman numeral "CM" into a Hindu-Arabic numeral, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Roman Numerals**: The Roman numeral given is "CM".

2. **Break Down the Roman Numerals**: In Roman numerals:
- "C" represents 100.
- "M" represents 1000.

3. **Understand the Combination**: The combination "CM" means that "C" (100) is placed before "M" (1000). In Roman numeral rules, when a smaller numeral is placed before a larger numeral, it indicates subtraction.

4. **Perform the Calculation**: Therefore, we subtract the value of "C" from "M":
- 1000 (M) - 100 (C) = 900.

5. **Write the Answer**: Thus, the Hindu-Arabic numeral for "CM" is 900.

### Final Answer:
The Hindu-Arabic numeral for "CM" is **900**.

---