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Section B
To light the bulbs B1, B2, and B4, which of the following switches should be on?
Ο Α
A. S1 and S2
B. Si only
C. S1 and S3
D. S2 and S3
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Answer 1

Step-by-step explanation:

there must be some diagram for this question... if you send that it would be easy to answer the question