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

The host of a game show, offers the guest a choice of three doors. Behind one is a expensive car, but behind the other two are goats.
After you have chosen one door, he reveals one of the other two doors behind which is a goat (he wouldn't reveal a car).

Now he gives you the chance to switch to the other unrevealed door or stay at your initial choice. You will then get what is behind that door.

You cannot hear the goats from behind the doors, or in any way know which door has the prize.

Should you stay, or switch, or doesn't it matter?

I have a sore throat and a severe headache. I have four tablets with me that are identical to each other and they do not have any cover on them. There is no way I can identify which tablet serves what purpose. The only thing that I know is that two of these four tablets are for the throat and the remaining two are for the headache. To treat my condition, I must take 1 of each. What will I do now?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

If we change the South-East direction into North and North-East into West and all others similarly.
Can you find out which direction will be in the place of South-West direction?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

How can you make a TV, a bed, a dog, and a car liquid?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

What do you see in the image below

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?