need cells combination of cells that will follow 2 conditions rules

[paranoir86]

0
i have 10 cars that need to fit in a car transporter truck. I have a limit on the length of the truck, which can take 5 cars in upper level and the rest 5 in ground level. i need a formula that will take the 10 car lengths and give me all possible 5 car combinations that dont exceed the truck length limit, while the rest 5 cars will also not exceed the length limit.
appreciate your hel