In these type of questions, certain pairs of numbers are given out of which all except one are similar in some manner while one is different. The numbers in these similar pairs may have the same property or may be related to each other according to the same rule. The candidate is required to choose the odd pair.
Choose the numeral pair which is different from others.

Options

A. 42-4
B. 36-6
C. 32-2
D. 15-5

Answer

To solve the problem of identifying the odd pair of numbers from the given options, we will analyze each pair to see how the numbers relate to each other.

### Step-by-Step Solution:

1. **List the Options:**
- Option 1: 42 - 4
- Option 2: 36 - 6
- Option 3: 32 - 2
- Option 4: 15 - 5

2. **Analyze Each Pair:**
- **Option 1 (42 - 4):**
- Check if 4 divides 42:
\[ 42 \div 4 = 10.5 \quad (\text{not an integer}) \]
- 4 does not divide 42 completely.

- **Option 2 (36 - 6):**
- Check if 6 divides 36:
\[ 36 \div 6 = 6 \quad (\text{an integer}) \]
- 6 divides 36 completely.

- **Option 3 (32 - 2):**
- Check if 2 divides 32:
\[ 32 \div 2 = 16 \quad (\text{an integer}) \]
- 2 divides 32 completely.

- **Option 4 (15 - 5):**
- Check if 5 divides 15:
\[ 15 \div 5 = 3 \quad (\text{an integer}) \]
- 5 divides 15 completely.

3. **Identify the Odd Pair:**
- From the analysis, we see that:
- Option 1 (42 - 4) is the only pair where the second number does not divide the first number completely.
- All other options (2, 3, and 4) have the second number dividing the first number completely.

4. **Conclusion:**
- Therefore, the odd pair is **Option 1: 42 - 4**.