Complete the table series riddle by finding the number that can replace "??".

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

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?

What word does this rebus represent?

meta meta
meta meta

The doctor advised his patient to take a tablet after every fifteen minutes. He gave him five tablets in total.

How much time will he take to have all the five tablets?

Why is the longest human nose just 11 inches?

P is the father of Q and S is the son of R. T is the brother of P and has a daughter U. If R is the sister of P, then what is the relation between U, Q and S?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

What can jump higher than a building?