Find the odd pair: In each pair N–M, the second number should be exactly double the first (M = 2 * N). Identify the pair that breaks this doubling rule.

Introduction / Context:
Arithmetic-mapping classification tasks often use linear relations. Here, the intended mapping is M = 2 * N (the second number is double the first). The odd pair violates this relation.

Given Data / Assumptions:

• Pairs: 12–24, 14–28, 23–46, 36–70.
• Check exact doubling, not approximate.

Concept / Approach:
Compute 2 * N for each pair and compare with M. Any mismatch identifies the odd pair.

Step-by-Step Solution:

Verification / Alternative check:
Compute M − 2N for each pair: 0, 0, 0, and −2 respectively. Non-zero difference confirms the mismatch in 36–70.

Why Other Options Are Wrong:
They accurately represent doubling and so are not the odd item.

Common Pitfalls:
Rounding or mental slips (e.g., mistaking 2 * 36 as 70). Always multiply exactly.

Final Answer:
36 - 70 is the odd pair.