Three of the four parts are exactly equal which of the parts is not equal to other three?

Options

A. `(6^2+2^2)div2^2-17`
B. `116xx2+27-266`
C. `(62xx9)div2sqrt(49)`
D. none of these

Answer

To solve the problem of identifying which of the four parts is not equal to the other three, we will evaluate each option step by step.

### Step 1: Evaluate Option A
**Option A:** \( \frac{6^2 + 2^2}{2} - 17 \)

1. Calculate \( 6^2 + 2^2 \):
\[ 6^2 = 36, \quad 2^2 = 4 \quad \Rightarrow \quad 36 + 4 = 40 \]

2. Divide by 2:
\[ \frac{40}{2} = 20 \]

3. Subtract 17:
\[ 20 - 17 = 3 \]

**Result for Option A:** 3

### Step 2: Evaluate Option B
**Option B:** \( 116 \times 2 + 27 - 266 \)

1. Calculate \( 116 \times 2 \):
\[ 116 \times 2 = 232 \]

2. Add 27:
\[ 232 + 27 = 259 \]

3. Subtract 266:
\[ 259 - 266 = -7 \]

**Result for Option B:** -7

### Step 3: Evaluate Option C
**Option C:** \( \frac{62 \times 9}{2 \sqrt{49}} \)

1. Calculate \( 62 \times 9 \):
\[ 62 \times 9 = 558 \]

2. Calculate \( \sqrt{49} \):
\[ \sqrt{49} = 7 \]

3. Calculate \( 2 \sqrt{49} \):
\[ 2 \times 7 = 14 \]

4. Divide:
\[ \frac{558}{14} = 39.8571 \quad (\text{approximately } 39.8) \]

**Result for Option C:** Approximately 39.8

### Step 4: Evaluate Option D
**Option D:** \( 9 \)

**Result for Option D:** 9

### Summary of Results
- **Option A:** 3
- **Option B:** -7
- **Option C:** Approximately 39.8
- **Option D:** 9

### Conclusion
The only option that is not equal to the other three is **Option C**, which results in approximately 39.8, while the others yield -7, 3, and 9.