Solution
The logic here is
7 x 6 = 42
9 x 2 = 18
7 x 3 = 21
9 x 3 = 27
In all number pairs except 92 - 20, second number is equal to product of digits of first number.
$$\therefore\ $$92 - 20 is the odd number pair among the given numbers.
Hence, the correct answer is Option B
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