I forgot to include the power dissapation by the resistors

the single 10w 10Ω resistor is going to give you a power dissaption of 2.7w total

the 2p arrangement of the 10w 10Ω resistors is going to give you a net resistance of 5 ohms for a total of 5.3w or 2.7w per resistor

the 2s2p arrangement of the 10w 10Ω resistors is going to give you a net resistance of 10Ω for a total of 2.7w or 0.7w per resistor

the 4s arrangement of the 10w 1Ω resistors is going to give you a net resistance of 4Ω for a total of 6.6w or 1.7w per resistor.