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Six​ people, call them​ A, B,​ C, D,​ E, and​ F, are randomly divided into three...

Six​ people, call them​ A, B,​ C, D,​ E, and​ F, are randomly divided into three groups of two. Find the probability that A and B are in the same​ group, as are C and D.​ (Do not impose unwanted ordering among​ groups.)

The probability that A and B are in the same​ group, as are C and D is

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