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?

A bag contains 64 balls of eight different colours. There are eight of each colour (including red). What is the least number you would have to pick, without looking, to be sure of selecting 3 red balls?

What's the only room from which no one can enter or leave

No matter how little or how much you use me, you change me every month. What am I?

There is a movie name hidden in the picture that is attached with this question. Can you find out which movie is it?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

You need to move three matchsticks to form three squares. Can you do it?

As shown in the picture below, we can see a boy hanging on the tree branch to save his life. There are various ways in which he can die like1. A snake hanging toward the right waiting to bite the boy.2. A roaring Lion near the tree.3. Two crocodiles are ready to attack if the boy reaches near water. The tree is chopped to some extent, so can fall as if he moves a lot. Can you give this boy an escape plan?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

Identify the 10 differences between the two given pictures.