1. The problem statement, all variables and given/known data What is the equivalent resistance of the combination of identical resistors between points a and b in the figure below? 2. Relevant equations Series= Req= R1 + R2 + R3 etc Parallel = Req= (1/R1 + 1/R2 + 1/R3 etc)^-1 3. The attempt at a solution Req= R1 + (1/3R) + R3 I dont know what to do from here.