why number 8549176320 is one of a kind?

Find out the missing number in the picture attached:

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

Can you make four (4) nines (9) equal 100?

He runs but never walks. Murmurs, but never talks. Has a bed, but never sleeps. And has a mouth, but never eats?

I am sometimes honest
Sometimes dishonest
I can be sweet and also bitter
I can hurt you real bad and
also make u smile and blush ☺️
What am I?

Why Wine Glass Stem is so long?

Can you count the number of triangles in the given figure?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?