What does below rebus means ?

Find the missing letter in the last circle logically in the given below picture.

The answer I give is yes, but what I mean is no. What was the question?

What kind of tree can you carry in your hand?

81 x 9 = 801. What must you do to make the this equation true?

Can you find out who is the kidnapper in below Picture and why, Explain ?

What work can one never finish?

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

Four men were in a boat on the lake. The boat turns over, and all four men sink to the bottom of the lake, yet not a single man got wet! Why?