Write the following in Hindu-Arabic numeral.
XL

Answer

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

### Step 1: Identify the Roman Numerals
The Roman numeral "XL" consists of two letters: "X" and "L".

### Step 2: Determine the Values of Each Roman Numeral
- The letter "X" represents the number 10.
- The letter "L" represents the number 50.

### Step 3: Understand the Subtraction Rule
In Roman numerals, when a smaller numeral appears before a larger numeral, it indicates subtraction. Here, "X" (10) is before "L" (50).

### Step 4: Perform the Calculation
Since "X" is before "L", we subtract the value of "X" from "L":
- 50 (L) - 10 (X) = 40

### Step 5: Write the Final Answer
Thus, the Hindu-Arabic numeral for the Roman numeral "XL" is **40**.

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