Three of the following four number-pairs are alike in a certain way and one is different. Find the odd one out.
$$29-59 : 29×2+1=59$$
$$27-55 : 27×2+1=55$$
$$21-43 : 21×2+1=43$$
$$25-53 : 25×2+3=53$$
so, 25-53 doesn't follow the same logic.
D is correct choice.
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