What does the below image rebus riddle means ?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

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

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

You visit a home for specially-abled children on the occasion of Christmas where you meet with 50 children. You have a box of chocolates containing 50 chocolates exactly.

What if you were asked to one chocolate to each child in a manner that one chocolate still remains in the box? Is it possible?

After undergoing a successful eye operation, A blind girl has just boarded a train to her home. The doctor asked her to open the bandages after 3 hours. On her train journey, she opened the bandages and within a fraction of the time she commits suicide by jumping off the train.

Though her operation was successful, Why did she commit suicide?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

The more it dries, the wetter it becomes. Can you tell what it is?