What is the equivalent resistance of the combination of identical resistors between points a and b in the figure below?
Series= Req= R1 + R2 + R3 etc
Parallel = Req= (1/R1 + 1/R2 + 1/R3 etc)^-1
The Attempt at a Solution
Req= R1 + (1/3R) + R3
I dont know what to do from here.