If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

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?

Find the value of "?" in the ball picture Riddle below:

How many bricks does it take to complete a building that is 15 feet wide, 30 feet deep, and 12 feet tall made of brick?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

Find the missing letter in the last circle logically in the given below picture.

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

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)

What is common among 11, 69, and 88?