You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

On a certain day, John celebrated his birthday. Two days later, his older twin brother Jacob celebrated his birthday.

Is this even possible? How can it be?

4 fathers, 2 grand-fathers and 4 sons went to watch the movie.What is the minimum number of tickets they need to buy ?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

If I put in one canary per cage, I have one bird too many. If I put in two canaries per cage, I have one cage too many. How many cages and canaries do I have?

The more of this there is, the less you see. What is it?

Alex is stranded on an island covered in forest.
One day, when the wind is blowing from the west, lightning strikes the west end of the island and sets fire to the forest. The fire is very violent, burning everything in its path, and without intervention the fire will burn the whole island, killing the man in the process.

There are cliffs around the island, so he cannot jump off.

How can the Alex survive the fire? (There are no buckets or any other means to put out the fire)

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?