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.

Options

A. 70-80
B. 54-62
C. 28-32
D. 21-24

Answer

To solve the problem of identifying the odd pair of numbers from the given options, we will analyze the pairs systematically.

### Step-by-Step Solution:

1. **Identify the Pairs**: We have four pairs of numbers:
- Option 1: (70, 80)
- Option 2: (54, 62)
- Option 3: (28, 32)
- Option 4: (21, 24)

2. **Calculate the Ratios**:
- **Option 1**:
- Ratio of 70 to 80 = 70/80 = 7/8
- **Option 2**:
- Ratio of 54 to 62 = 54/62 = 27/31 (after dividing both by 2)
- **Option 3**:
- Ratio of 28 to 32 = 28/32 = 7/8 (after dividing both by 4)
- **Option 4**:
- Ratio of 21 to 24 = 21/24 = 7/8 (after dividing both by 3)

3. **Compare the Ratios**:
- From our calculations:
- Option 1: 7/8
- Option 2: 27/31
- Option 3: 7/8
- Option 4: 7/8
- We see that Options 1, 3, and 4 have the same ratio of 7/8, while Option 2 has a different ratio of 27/31.

4. **Identify the Odd Pair**:
- Since Options 1, 3, and 4 share the same ratio, while Option 2 does not, we conclude that Option 2 is the odd pair.

5. **Final Answer**:
- The odd pair is **Option 2: (54, 62)**.