why number 8549176320 is one of a kind?

Replace the question mark with the correct number in the below-given picture?

What you cannot hold but it is yours?

Before Mount Everest was discovered, what was the highest mountain in the world?

Can you discover the missing number in this series?

37, 10, 82
29, 11, 47
96, 15, 87
42, ?, 15

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

A man is found hanging dead from the ceiling of a room. The room’s dimensions are 15 x 15 x 15. The man is only 6ft tall and the rope was only 2ft long. There are no windows and only one door to the room. The door is bolted shut from the inside, and a puddle of water is under the man. How did he kill himself?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

What is the unique property of the following words ?
* Revive
* Banana
* Grammar
* Voodoo
* Assess
* Potato
* Dresser
* Uneven