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

Which is Odd One Out and why?

4377

3954

9862

8454

9831

I don't get anymore wetter, no matter how much rain falls on me.

What is the longest word in the dictionary?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

Which country gets ill every time?

You need to move three matchsticks to form three squares. Can you do it?

I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?

John and his wife were living in a rural place. On a particular day, John's wife fell ill and he called the local doctor. When the doctor picked up, he said, "Doctor, my wife is ill. She might have appendicitis."

"This can't be possible! I took out her appendix two years ago myself," the doctor explained.

When diagnosed, John's wife was found to have appendicitis. How can this be possible?

What does this rebus means ?