Three of the following number pairs are alike in a certain way and one is different. Identify the pair that is different (the odd one out). The pairs are: (90, 144), (75, 120), (45, 70), (65, 104). Operations should be performed on the whole numbers, not on their individual digits.

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Let's analyze the relationship between the numbers in each pair:

1. 90 – 144: 90 × 1.6 = 144
2. 75 – 120: 75 × 1.6 = 120
3. 45 – 70: 45 × 1.555... = 70
4. 65 – 104: 65 × 1.6 = 104

In three pairs (90–144, 75–120, 65–104), the second number is 1.6 times the first number. In the pair 45–70, the second number is not 1.6 times the first (45 × 1.6 = 72, not 70). Therefore, (45, 70) is the odd one out.

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