Do You See It?

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

A man dies of old age on his 25 birthday. How is this possible?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

A newspaper is supposed to have 60 pages.Pages 14 and 21 are missing from the newspaper.

Can you tell me , Which other pages won't be there as well ?

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

The following four words might seem abrupt to you. But you can make them meaningful by just adding vowels.
RDSH
GGPLNT
TMT
NN

Hint: All of them are vegetables.

How is the moon similar to a dollar?