why number 8549176320 is one of a kind?

In an interview, a boy was asked an unusual question 'How two persons sitting with a table in between them can't see each other?' He was unable to reply. Can you?

There are four 3-link chains. All you have to do is join them into a big 12-link chain. For joining two closed links, one of the links must be cut and placed onto the other link for closing.

How many minimum links will you have to cut to make the big chain?

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

Count the number of balls in picture below:

The cream is heavier than Milk. True or False?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

What does it mean?

A little girl goes to the store and buys one dozen eggs. As she is going home, all but three break. How many eggs are left unbroken?

In the image given, you can find several triangles. Can you count them all?