`15+5-:5xx2=?`

Options

A. `8`
B. `2`
C. `17`
D. none of these

Answer

To solve the expression \( 15 + 5 -: 5 \times 2 \), we will follow the BODMAS/BIDMAS rule, which stands for Brackets, Orders (i.e., powers and square roots, etc.), Division and Multiplication (from left to right), Addition and Subtraction (from left to right).

### Step-by-Step Solution:

1. **Identify the operations**: The expression consists of addition, division, and multiplication. According to BODMAS, we will perform division and multiplication before addition.

2. **Rewrite the expression**: The expression can be rewritten as:
\[ 15 + \left( \frac{5}{5} \times 2 \right) \]
Here, we interpret "-:" as division.

3. **Perform the division**: Calculate \( \frac{5}{5} \):
\[ \frac{5}{5} = 1 \]

4. **Substitute back into the expression**: Now, substitute the result back into the expression:
\[ 15 + (1 \times 2) \]

5. **Perform the multiplication**: Calculate \( 1 \times 2 \):
\[ 1 \times 2 = 2 \]

6. **Substitute back again**: Now, substitute this result back into the expression:
\[ 15 + 2 \]

7. **Perform the addition**: Finally, calculate \( 15 + 2 \):
\[ 15 + 2 = 17 \]

### Final Answer:
Thus, the value of the expression \( 15 + 5 -: 5 \times 2 \) is \( 17 \).

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