Find the value of "?" in the ball picture Riddle below:

A boy purchased a book from a bookkeeper and gave him $100.
The cost of the book is $50 but the bookkeeper has no change, so he gets the change from the next shop and returns the boy his $50.

After some time the next shopkeeper came with the $100 note and told the bookkeeper that the note was a fraud, so he took the money back.

How much loss did the bookkeeper face?

Find the 8 in the below-given Image.

Prove that the below maths equation is true.

8 + 8 = 91

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

What has many keys but can’t open a single lock?

Five thieves looted a bank and they ran away in a car. The bank staff informed the police and they began the search of their car in their jeep. They found them on a road and chased them eventually catching them. The light that is used to fill the number plate was broken on the thieves' car. Also, the headlights of the jeep police were not working. How were the police able to catch the thieves then?

Can you find a five letter word that is left with only two letters if one is removed?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

You can hear me, but you can't touch or see me.

What am I?