A wire of `2 Omega` is halved and two pieces are joined in parallel. Find its resistance?

Three resistors 2Omega , 4Omega and 5Omega are combined in parallel. What is the total resistance of the combination?

A uniform wire of resistance 40SN is cut into four equal parts and they are connected in parallel. The effective resistance of the combination is

When two resistors are connected In series, the effective resistance is 5 Omega . When they are connected In parallel, resistance is 6//5 Omega . Find the Individual resistances.