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

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

What do you call a fish without an eye?

I have a mouth but I don't eat.
I have a bank but have no money.
I have a bed but i dont sleep.
I wave but have no hands.

Who Am I ?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

What does below Rebus say?

XLR8

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?

2, 3, 5, 9, 17, _ What is the next number in the sequence?

What is the longest word in the dictionary?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?