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

One absent-minded ancient philosopher forgot to wind up his only clock in the house. He had no radio, TV, telephone, internet, or any other means for telling time. So he travelled on foot to his friend's place a few miles down the straight desert road. He stayed at his friend's house for the night and when he came back home, he knew how to set his clock. How did he know?

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

f you were running a race, and you passed the person in 2nd place, what place would you be in now?

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

What does below Rebus say?

XLR8

There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

What does below chemistry rebus means?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?