If signs - and `xx`, and numbers 5 and 14 are interchanged, then the value of `5 + 4 div 2 - 8 xx 14` is
A. 15
B. 20
C. 25
D. 30

Options

A. D
B. B
C. C
D. A

Answer

To solve the problem, we need to follow the instructions given in the question regarding the interchange of signs and numbers. Let's break it down step by step.

### Step-by-Step Solution:

1. **Identify the Original Expression**:
The original expression is:
\[ 5 + 4 \div 2 - 8 \times 14 \]

2. **Interchange the Signs and Numbers**:
According to the question, we need to interchange the signs "-" and "×", and the numbers "5" and "14". This means:
- Replace "-" with "×"
- Replace "×" with "-"
- Replace "5" with "14"
- Replace "14" with "5"

After interchanging, the expression becomes:
\[ 14 + 4 \div 2 - 8 \times 5 \]

3. **Evaluate the Expression**:
We will follow the order of operations (BODMAS/BIDMAS):
- First, perform the division:
\[ 4 \div 2 = 2 \]
- Now substitute this back into the expression:
\[ 14 + 2 - 8 \times 5 \]
- Next, perform the multiplication:
\[ 8 \times 5 = 40 \]
- Substitute this back into the expression:
\[ 14 + 2 - 40 \]
- Now perform the addition and subtraction from left to right:
\[ 14 + 2 = 16 \]
\[ 16 - 40 = -24 \]

4. **Final Result**:
The value of the expression after all calculations is:
\[ -24 \]

### Conclusion:
The final value of the expression after interchanging the signs and numbers is **-24**. However, since the options provided do not include -24, it seems there was a misunderstanding in the interpretation of the problem or the options provided.