Write LXXIX in Hindu-Arabic numerals

Options

A. 70000
B. 70009
C. 7009
D. 700009

Answer

To convert the Roman numeral LXXIX to Hindu-Arabic numerals, we follow these steps:

1. **Identify the Roman Numerals**: LXXIX consists of the following Roman numerals:
- L = 50
- XX = 20 (X + X = 10 + 10)
- IX = 9 (I before X indicates 10 - 1)

2. **Add the Values Together**: Now we add the values of the Roman numerals:
- L (50) + XX (20) + IX (9)

3. **Calculate the Total**:
- First, add L and XX:
50 + 20 = 70
- Then, add IX:
70 + 9 = 79

4. **Final Result**: Therefore, LXXIX in Hindu-Arabic numerals is 79.

### Summary of Steps:
- L = 50
- XX = 20
- IX = 9
- Total = 50 + 20 + 9 = 79