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

Three men in a cafe order a meal the total cost of which is $15. They each contribute $5. The waiter takes the money to the chef who recognises the three as friends and asks the waiter to return $5 to the men.

The waiter is not only poor at mathematics but dishonest and instead of going to the trouble of splitting the $5 between the three he simply gives them $1 each and pockets the remaining $2 for himself.

Now, each of the men effectively paid $4, the total paid is therefore $12. Add the $2 in the waiters pocket and this comes to $14. Where has the other $1 gone from the original $15?

What is so fragile that saying its name breaks it?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?

You have two buckets - one holds exactly 5 gallons and the other 3 gallons. How can you measure 4 gallons of water into the 5 gallon bucket?

(Assume you have an unlimited supply of water and that there are no measurement markings of any kind on the buckets.)

In the image given, you can find several triangles. Can you count them all?

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

You throw me out when you want to use me and you take me in when you don't want to use me.

Who Am I?