# Numbers

Normal numbers

A number is said to be normal in base b if, for every positive integer n , all possible strings n digits long have density b −n. Intuitively, a number...

Set of numbers

A set of numbers is a collection of numbers, called elements. The set can be either a finite collection or an infinite collection of numbers. One way ...

When were addresses invented

Early addresses were just super vague In the first city directory, published in 1785, households are mostly listed by their cross streets (think “3rd ...

To subtract two numbers automatically change the sign of the

What is the rule for subtracting signed numbers?Which command is used to subtract two numbers?When you multiply two numbers with the same sign the re...

Big numbers in english

Saying large numbers in EnglishNumberName100,000hundred thousand1,000,000million1,000,000,000billion1,000,000,000,000trillion How do you say numbers i...

Large and small numbers in mathematics

By the way, 10100, a one followed by 100 zeros is actually named “googol.” Note that this spelling is different from the name of a large tech company....

How to find mean, median, mode

The arithmetic mean is found by adding the numbers and dividing the sum by the number of numbers in the list. This is what is most often meant by an a...

Why do house numbers go up in twos

Why do house numbers go up in 2s?Why do house numbers jump?What do house numbers go up in?Why are house numbers odd on one side and even on the other...

How to add numbers

What is addition example?What two numbers add 5?Can a 3 year old do addition?What is an addition chart?What is sum in addition? What is addition exa...