Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

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

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

What does this mean?

CCCCCCC

Can you make the below equation true by using any three numbers from "1, 3, 5, 7, 9, 11, 13 and 15"?

( ) + ( ) + ( ) = 30

What does an Island and the letter T have in common?

How can you leave a room with two legs and return with six legs?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

What is the word or phrase?