2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?

Why Aeroplane windows are round?

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

There are two insects on a tile. Insect X is sitting on one side of the tile (point A) and Insect Y is sitting opposite on the other side of the tile (point B). Now both of them decide to change their position and thus X starts crawling to point B and Y starts crawling to point A. When they meet and pass each other in between, X takes 20 seconds to reach B and Y takes just 5 seconds to reach A.

Can you calculate the total time each of the insects took to change their positions?

There are six people in a family namely M, N, O, P, Q and R.

R and O are brother and sister.

N is the brother of Q's husband.
P is the father of M and grandfather of R.

How many male members are in the family?

There is something which is always coming but never arrives?

Why do you find that most of the buildings are deprived of the 13th floor?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

A man was driving a black truck. His lights were not on. The moon was not out. A lady was crossing the street. How did the man see her?

What are the 50th, 63rd and 100th numbers in the sequence below?
4, 5, 8, 8, 9, 9, 12, 13, 13, 13, 17, 18, ...