I was trying to solve this problem (number 27) and as per the KCL equations I am getting that an infinite number of Ammeter readings are possible.
I used KCL after taking the outer loop as the ground (ideal ammeter means voltage is the same everywhere in the outer loop). I found unique values for the currents in the inner loop but I need one more equation to uniquely determine the outer loop current?
I was unable to simulate this, an error (check circuit topology appeared in EveryCircuit). None of the options are among the infinite solutions I found. Can you help me find the answer?