Maths Labyrinth: Blind Choice Answer

“You somehow escaped its grasp; now you face a familiar choice”

Answer: 5 – Any of the black socks can match with any other black sock, and same with the whites. If she picks 5 socks, if there are 0 or 1 black socks there must be at least 2 white pairs from the rest. If there are 2 or 3 black socks there must be one pair of each colour, and if there are 4 or 5 black socks there will be 2 black pairs.

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