Câu hỏi:
You are in a very dark room containing only a chest filled with 20 black and 20 white socks with no source of light or its reflection, your mission is to pick one pair of either black or white sock you need. What is the smallest amount of socks you can pick at random to make this possible?
Đáp án:
The riddle "The Socks" is unanswered.
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