If `+` means `-`, `xx` means `div` ,`-` means `+` and `div` means `xx` , then `104 xx 13 +9-5 div 6 = ?`
यदि '+' का अर्थ 'घटाना', '`xx`' का अर्थ 'भाग',`div`' का अर्थ 'गुणा' है,
`104 xx 13 +9-5 div 6 = ?`

Options

A. `31`
B. `36`
C. `29`
D. `30`

Explanation

To solve the equation `104 xx 13 + 9 - 5 div 6` with the given substitutions, we will follow these steps:

1. **Identify the substitutions**:
- `+` means `-`
- `xx` means `div`
- `-` means `+`
- `div` means `xx`

2. **Rewrite the expression using the substitutions**:
- The original expression is `104 xx 13 + 9 - 5 div 6`.
- Applying the substitutions, we get:
- `104 div 13 - 9 + 5 xx 6`.

3. **Perform the division**:
- Calculate `104 div 13`:
- `104 ÷ 13 = 8`.
- Now, the expression becomes:
- `8 - 9 + 5 xx 6`.

4. **Perform the multiplication**:
- Calculate `5 xx 6`:
- `5 * 6 = 30`.
- Now, the expression becomes:
- `8 - 9 + 30`.

5. **Perform the addition and subtraction**:
- We can solve `8 - 9` first:
- `8 - 9 = -1`.
- Now, the expression is:
- `-1 + 30`.
- Finally, calculate `-1 + 30`:
- `-1 + 30 = 29`.

Thus, the final answer is **29**.