Move four matchsticks to the below square to form three squares?

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

81 x 9 = 801. What must you do to make the this equation true?

Two boys were admitted to a school. When the headmaster asks them about their parents, they tell him that they have same parents (father and mother). On further inquiry, it turns out that they both share the same date for their birthday.

"Are you twins," ask the headmaster.
"No," replies the boys.

Is it possible?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

What can you hold in your right hand, but never in your left hand?

Which is the smallest number that you can write using all the vowels exactly once?

What does below pictogram mean?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

Client Dempsey living in one of the East Coast states of the U.S. was talking to Landon Donovan, who was living in the West Coast state of the U.S.

Dempsey: What time is it?
Donovan: Wow, It is the same time here.

How is this possible?