Numbers

This category is everything number related.

Questions

How do I determine if a number is even or odd?

How do I perform trigonometric calculations?

How do I work with logarithms?

You need to generate a unique identification value to track a user.

You need to test a string to see if it is a valid numeric value.

You need to work with non-US formatted numbers and currencies.

You need to round a number to an integer value.

You need to determine whether a number is positive or negative, or you need to find the absolute value of a number.

You need to format a number as a US currency for output.

You need to format a non-currency number for output.