Infinity is an abstract concept used to describe something that is endless or boundless.
Vast, mysterious, awe-inspiring, infinite.
There are an infinite number of words that can describe a cashier. You can describe a cashier as friendly or unorganized for example.
A sphere is as symetrical as any shape can get. It has an infinite amount of lines of symetry if that line goes through the center
There are an infinite number of possibilities.
If you mean "the last number", there is no such thing; you can always add one more. Even infinite numbers - numbers that describe the magnitude of infinite sets - don't have a "last number"; you can always find a larger infinite number. Specifically, if you have a certain infinite number, 2 to the power of that infinite number will give you a larger infinity.
The classical idea about black holes is that in a black hole, mass is concentrated to an infinitely small size, so it has an infinite density. That would cause an infinite gravitational field. However, this infinite density, etc. seems doubtful in view of quantum physics - but what exactly happens near the center of a black hole has not been completely clarified yet.
Not possible, summing an infinite series would take infinite time.
The way I understand it, a finite set can not be an infinite set, because if it were an infinite set, then it would not be a finite set, and the original premise would be violated.
Study of circles. It was derived by mathematicians(Greek?) who developed an infinite series to describe it.
We don't print an infinite amount because that would generate inflation. If we printed an infinite amount of money, the currency would become cheap and worthless.
You cannot answer this with a normal shape. Any shape given would have less an infinite sides. The exception to this would BE the shape with infinite sides and therefore by the same token, an infinite perimeter. So, the answer would be a "Fractal"
An art suggests infinite answers through its creativity but it does not mean that if it is infinite, it is neutral. An art may suggest negative or positive sides. The general rule here is, it is how you will describe an art.