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Identify the missing number: 47 : 9 :: ? : 14 :: 92 : 18

1. 72
2. 73
3. 37
4. 27

Correct answer: 72

Solution

The rule is: result = (first number - 2) / 5. Verify: (47-2)/5 = 45/5 = 9 and (92-2)/5 = 90/5 = 18. For the middle pair: (? - 2)/5 = 14 => ? - 2 = 70 => ? = 72.

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