What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

Four men were in a boat on the lake. The boat turns over, and all four men sink to the bottom of the lake, yet not a single man got wet! Why?

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

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What colour are the stairs?

The peacock is a bird that does not lay eggs. How do they get baby peacocks?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

They are three errirs in this question. Can you find them?

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

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.