Eight different values of resistance can be obtained by
connecting together three resistors (1.00, 2.00, and 3.00 Ω) in all
possible ways. What are the values?
Answers: 6.00 Ω, 0.545 Ω, 3.67 Ω, 2.75 Ω, 2.20 Ω, 1.50 Ω, 1.33 Ω,
0.833 Ω
But I'm not entirely sure how to get these.

Eight different values of resistance can be obtained by connecting together three resistors (1.00, 2.00, and...