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The logic followed here is: 2nd number is three times the product of the 1st and 2nd digit of the 1st number.
53 : 45 = 3 X (5 X 3) = 45
41 : 12 = 3 X (4 X 1) = 12
Similarly, 62 : ? = 3 X (6 X 2) = 36
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