Choose the odd numeral pair in each of the following questions :

Options

A. 80-9
B. 64-8
C. 36-6
D. 49-7

Answer

To solve the problem of identifying the odd numeral pair among the given options, we will analyze each pair based on the relationship between the two numbers in each pair.

### Step-by-Step Solution:

1. **Identify the Pairs**: The pairs given are:
- Pair 1: (80, 9)
- Pair 2: (64, 8)
- Pair 3: (36, 6)
- Pair 4: (49, 7)

2. **Analyze Each Pair**:
- **Pair 1 (80, 9)**:
- Calculate the square of 9:
\[ 9^2 = 81 \]
- 80 is not equal to 81, so this pair does not follow the pattern.

- **Pair 2 (64, 8)**:
- Calculate the square of 8:
\[ 8^2 = 64 \]
- This pair follows the pattern since 64 equals 8 squared.

- **Pair 3 (36, 6)**:
- Calculate the square of 6:
\[ 6^2 = 36 \]
- This pair also follows the pattern since 36 equals 6 squared.

- **Pair 4 (49, 7)**:
- Calculate the square of 7:
\[ 7^2 = 49 \]
- This pair follows the pattern since 49 equals 7 squared.

3. **Identify the Odd Pair**:
- From the analysis, we see that pairs (64, 8), (36, 6), and (49, 7) all follow the pattern of the first number being the square of the second number. However, the pair (80, 9) does not follow this pattern because 80 is not equal to 9 squared (which is 81).

4. **Conclusion**:
- The odd numeral pair is **(80, 9)**.