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 choosing the odd numeral pair from the given options, we will analyze each pair to determine if the second number is the square root of the first number.

### Step-by-Step Solution:

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

2. **Calculate the Square of the Second Number**:
- For the pair (80, 9):
- \(9^2 = 81\)
- For the pair (64, 8):
- \(8^2 = 64\)
- For the pair (36, 6):
- \(6^2 = 36\)
- For the pair (49, 7):
- \(7^2 = 49\)

3. **Compare Each Pair**:
- In the pair (80, 9), the first number (80) is not equal to the square of the second number (81).
- In the pair (64, 8), the first number (64) is equal to the square of the second number (64).
- In the pair (36, 6), the first number (36) is equal to the square of the second number (36).
- In the pair (49, 7), the first number (49) is equal to the square of the second number (49).

4. **Identify the Odd Pair**:
- The only pair where the first number is not the square of the second number is (80, 9). Therefore, this is the odd pair.

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