I have a riddle?

10. You, the bed, and the chair.

None. The room, with 10 legs on its floor, is on the ground. 

 Just 8 from the bed and chair if the room has a dirt floor.

42              .

Two. Yours.          

Zero.   If you enter a room,  with a chair and a bed, then it is presumed none of that is resting on the "ground"......but rather some sort of wood or tile floor.  Maybe it's a concrete bunker room.....so the floor is cement. 

You could say  10 legs.....your 2....plus the 4 on the chair and 4 on the bed,  but who says the chair has 4 legs?   Maybe it's a beanbag chair,  with zero legs. Maybe the bed is a Futon,  with zero legs. 

and for that matter.........who says you have 2 legs?   maybe you're an amputee or even a double amputee in a wheelchair. 

So there is no one correct answer to this riddle as it contains too many variables. 

10 legs - your 2 - bed 4 - chair 4 unless you only have 1 leg Har

Sounds like you're in a big stable; 10.

How many stools are on the bed.

It is not possible to say because we do not know how many legs the chair and bed have. My bed has six legs. All my chairs have four legs. All we can say with certainty is that none of the animals legs (assuming legs include feet) are touching the ground but mine are. I am two legged so the answer is 2 +chair legs + bed legs.

None.  They would be on the FLOOR, not the GROUND.