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 format a non-currency number for output.
	You need to format a number as a US currency for output.
	You need to generate a unique identification value to track a user.
	You need to round a number to an integer value.
	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.