How can a man go eight days without sleep?

If 1+9+8=1, what is 2+8+9?

2, 3, 5, 9, 17, _ What is the next number in the sequence?

There is a box in which distinct numbered balls have been kept. You have to pick two balls randomly from the lot.

If someone is offering you a 2 to 1 odds that the numbers will be relatively prime, for example
If the balls you picked had the numbers 6 and 13, you lose $1.
If the balls you picked had the numbers 5 and 25, you win $2.

Will you accept that bet?

There is a certain crime, that if it is attempted, is punishable, but if it is committed, is not punishable. What is the crime?

What four weights can be used to balance from 1 to 30 pounds?

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

What can go up a chimney down, but can't go down a chimney up?

Rahul decided to meet Simran so he boards a local train from Bombay station. Just after the station, there is a 1km long tunnel. The train starts and is now accelerating. Rahul is a claustrophobic guy, so what is the best position for him to sit?

There is a wide field of corn. A goose finds its way into the field and starts running. Can you find out till which point the goose can run into the field?