what does the below rebus means?

In the picture given below, can you find out which digit will take place of the question mark?

Which is the smallest number that you can write using all the vowels exactly once?

John was piloting a plane behind a car but was never able to overtake it. Why?

Which is the rope you never skip with?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

There are three boxes. One is labeled "APPLES" another is labeled "ORANGES". The last one is labeled "APPLES AND ORANGES". You know that each is labeled incorrectly. You may ask me to pick one fruit from one box which you choose.

How can you label the boxes correctly?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

A donkey is behind another donkey
I'm behind that second donkey
But there is a whole nation behind me

It is a murder you can describe in a word.

For this puzzle, you might have to find logic in something illogical. But hey, it's fun and a healthy little break from your strenuous puzzle-solving sessions.

Can you decipher the meaning in the following cluster of letters?

ITIT,NCENTCENT