Answer:
252.
Step-by-step explanation:
We use the Multiplication Rule:
Number of outfits = 7 * 3 * 2 * 6 = 252.
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To me, this is an example of both association and causation.
These scientists associated the number of radios with the number of people in the insane asylum. At the same time, it is implied that the increased number of radios led to the number of people in the asylum.