First I will parallel two of the resistors, creating a net 1 ohm. Then I will series that with the remaining 2-ohm resistor, resulting in 3 ohms.
To achieve 3 Ω resistance with three 2 Ω resistors, connect two resistors in parallel for an equivalent of 1 Ω and then connect the third resistor in series. This results in a total resistance of 3 Ω .
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