Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

Below rebus represent famous DiCaprio movie. Can you name it?

What does this simple rebus mean?

Begin with a word, five letters to my name,
Remove the first and last but I am the same
Take out my middle and still, I remain.
What word am I?

A newspaper is supposed to have 60 pages, but pages 24 and 41 are missing.
Which other pages won't be there?

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

If a wheel has 54 spokes, how many spaces are there between the spokes?

How many triangles are there on the puzzle below?