Problem: What pieces occupy all four corners of the board at the start of a chess game?
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A: rooks

Problem: If you give a mouse a cookie, what will he want next?
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A: milk

Problem: Who devised the Expectancy Theory of motivation?
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A: victor vroom

Problem: "Which common piece of medical equipment is named from two Greek words for ""chest"" and ""to look at"" ?"
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A:
stethoscope