SAW-in minecraft

there are 3 challenges that you will have to complete in order to obtain a lever to open the 3 gateways to freedom.

CHALLENGE 1
the door for this one may be tricky. but im sure a smart minecrafter like yourself can figure it out
there are 3 doors to choose from. 2 of the doors will kill you. the other door will give you your first lever.

CHALLENGE 2
in this room you have 4 choices. 3 of them will kill you.

CHALLENGE 3
this one may be more difficult. but its my favorite
-hint:
that redstone looks dangerous...wouldn't it be a shame if something fell on it?

RULES-
pretty basic
dont break any blocks unless you place them
dont spawn items