Can you write down eight eights so that they add up to one thousand?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

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)

See the given image carefully. What you have to do is move the blue checkers in the position of the black checkers and vice versa. You are only allowed to move the checker to an adjacent empty space. Do it in the least possible moves.

What have one eye but still cannot see?

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

Count the Triangle in the figure given below:

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.