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

Find out the number of circles in the given picture having Illusion

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?

Spot what is wrong here in below Picture?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

A man is lying dead in a field where no one is around. His head is split open and his legs are disfigured. Near to him, there is an unopened package. No living organism can be found anywhere at the crime scene.

How did he die?

Two boys wish to cross a river. The only way to get to the other side is by boat, but that boat can only take one boy at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

O_er_t_o_

Complete the missing letters of the given word.

What's a single-digit number with no value?