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The Last Word


Bazza

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In tomorrow's (technically, later today's) ACT Prep class, we're discussing the use of Process of Elimination in finding the correct answer to a question. I'm giving them this question as an example:
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Arthur’s research group has determined that if a woman weighs the same as a duck, then she must be made of wood and is therefore a witch. Cassandra, who is suspected of being a witch, is weighed on a scale. Her mass is 50.0 kg. A mallard duck (Anas platyrhynchos) is weighed on the same scale, and its mass is 1.25 kg. Is Cassandra a witch?

A. Yes, because she weighs the same as a duck.
B. No, because she weighs the same as a duck.
C. Yes, because she does not weigh the same as a duck.
D. No, because she does not weigh the same as a duck.

Which of these answers can we immediately eliminate? Based on what’s left, what is the correct answer?

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