Question

A circuit contains four resistors connected in series. What happens to the equivalent resistance when one of the resistors is replaced with an ideal wire?

Answer 1

R = (R1 + R2 + R3 + R4) / 4 equivalent resistance

If one of the resistors is replaced by an ideal wire

R = (R1 + R2 + R3 / 3 equivalent resistance

The problem does not state that the resistors have the same value.