Three resistors of value 4 ω, 10 ω and 7 ω are placed in parallel. they are connected to a 6 ω resistor in series. what is the equivalent resistance in the circuit?

resistance of 4 ohm, 10 ohm and 7 ohm is connected in parallel.

so net resistance in parallel is given by

now it is connected to 6 ohm resistance in series

so net resistance is given by

less than one you can't create energy