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7. UBS: "If we were playing Russian roulette and had one bullet, I randomly spun the chamber and fired but nothing was fired, would you rather fire the gun again or respin the chamber and then fire on your turn?"
瑞士聯合銀行：如果我們玩俄羅斯輪盤并且只有一顆子彈，我在轉了彈輪之后開槍，沒子彈了。輪到你時，你是打開手槍轉一圈再對著自己開槍還是直接就拿著我剛開過的槍射自己呢？
8. JANE STREET CAPITAL: "What is the smallest number divisible by 225 that consists of all 1s and 0s?"
簡街資本：能被225整除，只包含0和1的最小的數字是多少？
