# Comparing numbers

To compare two numbers, use the following operators. All of them are quite obvious if you are familiar with other programming languages.

 `==` Equal `!=` Not equal `<` Less than `<=` Less than or equal `>` Greater than `>=` Greater than or equal

## Approximately-equal

In addition to standard operators, Raku adds the approximately-equal operator `=~=`, which compares the numbers approximately. Its result is `True` if the two numbers are relatively close to each other. The maximum relative difference must not exceed the built-in value `\$*TOLERANCE`, which is equal to `1e-15`.

## Unicode versions

Some of the above operators have their Unicode equivalents:

 `!=` `≠` `<=` `≤` `>=` `≥` `=~=` `≅`

## Examples

Some examples with the operators that compare numbers:

```say 10 == 10; # True
say 10 != 10; # False

say 15 < 10;  # False
say 10 <= 10; # True
say 16 > 10;  # True
say 10 >= 14; # False

say 1.000000000000000000000001 =~= 1.000000000000000000000002; # True
say 2e17 + 1 =~= 2e17 + 100; # True
```

Note that the number `1.000000000000000000000001` is a `Rat` number, so you do not lose precision in an expression with a close number `1.000000000000000000000002`. The last example with `2e17` operates with `Num` numbers, which have restricted precision.

## Practice

Complete the quiz that covers the contents of this topic.