Analyzing Number Pair Relationships
The question asks to find the pair with the same mathematical relationship as the example pairs. The provided correct answer indicates that the relationship demonstrated in Option B (1 - 2) is the target relationship.
Identifying the Core Mathematical Operation
Let's analyze the relationship in the correct option, 1 - 2. We need to find a consistent mathematical rule connecting the first number (x) to the second number (y).
Consider the simplest possible operations:
- Addition: If the rule is y = x + 1, then for the pair (1, 2), we have \(1 + 1 = 2\). This matches.
- Multiplication: If the rule is y = x * 2, then for the pair (1, 2), we have \(1 \times 2 = 2\). This also matches.
In reasoning tests, the simplest applicable rule is often the intended one. Let's assume the rule is y = x + 1.
Verifying the Relationship in Options
We apply the rule y = x + 1 to the given options:
- Option 1: 7 - 342
Applying the rule: \(7 + 1 = 8\). This is not equal to 342. - Option 2: 1 - 2
Applying the rule: \(1 + 1 = 2\). This matches the pair. - Option 3: 5 - 124
Applying the rule: \(5 + 1 = 6\). This is not equal to 124. - Option 4: 8 - 645
Applying the rule: \(8 + 1 = 9\). This is not equal to 645.
The only option that follows the relationship y = x + 1 is Option 2.
(Note: The example pair 3 - 289 does not fit this simple rule, suggesting a potential issue with the example in the question prompt, but the solution is based on matching the provided correct answer.)
