What has lots of eyes, but can’t see?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

Can you figure out the logic I used to decide the order of the following words:
gun, shoe, spree, door, hive, kicks, heaven, gate, line, den

Where do you go to learn how to make ice cream?

Which tank will fill first?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

Solve the counting riddle by identifying the number of triangles in the given picture.

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?

What do you think with the below Picture ?

Which number should replace the question mark?