"One and the same" or "One in the same"?

phrases

Solution 1:

The correct usage is "One and the same". A good dictionary or phrase compilation will confirm this. "One and the same" is used for emphasis, especially when there are seemingly different identities, characters, etc, in question. For example:

Johnny Jackson and the blind beggar in that corner are one and the same.

Solution 2:

One and the same.

Citation: Reference.com

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