# Zero zero distritais

### What is ZeroTier?

ZeroTier Inc. is a software company with a freemium business model based in Irvine, California. ZeroTier provides proprietary software, SDKs and commercial products and services to create and manage virtual software defined networks.

### What is the parity of zero?

The parity of zero is relevant to odd–even rationing, in which cars may drive or purchase gasoline on alternate days, according to the parity of the last digit in their license plates. Half of the numbers in a given range end in 0, 2, 4, 6, 8 and the other half in 1, 3, 5, 7, 9, so it makes sense to include 0 with the other even numbers.

### What is zero-factorial?

What is Zero-Factorial? Simple answer: 0! (read Zero Factorial) is defined to equal 1.

### What is the ZeroZero of an empty set?

Zero is the count of no objects; in more formal terms, it is the number of objects in the empty set. The concept of parity is used for making groups of two objects. If the objects in a set can be marked off into groups of two, with none left over, then the number of objects is even.