Although it is standard for most card providers to offer an introductory free period, consumer may be hit by a more substantial annual percentage rate (APR) later on year, with some providers, such as ASDA charging a massive APR of 28.8%. Even ActionAid charges an APR of 17.9%, rescuing developing world at expense of developed.

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The Fibonacci numbers, or sequence, was first used in Liber Abaci as a solution to a problem regarding ideal population of rabbits. It is a recursive number sequence that starts with 0 and 1, and succeeding numbers being sum of two numbers preceding it. This number sequence efficiently predicted ideal growth of population of rabbits. Later, mathematicians and scientist discovered that Fibonacci number sequence has a lot of other uses aside from just predicting population growth of rabbits. They have discovered that Fibonacci sequence, in fact, occurs in many various patterns of nature.

What started out as a way of counting rabbits has now found a large number of other uses and applications. And as our present day scholars continue to study about Fibonacci sequence, more and more uses for it continue to be discovered. Today, there are a variety of applications where Fibonacci sequence, and its derivatives, are being used. It has found use in many computer programs. A ratio derived from Fibonacci sequence, called Golden Mean, has been considered by ancient Greeks to be ideal aesthetic ratio and is now being widely used by many visual artists in their works. The Fibonacci trading system, which is an efficient way of predicting future trends in world financial markets, has also become popular to expert traders and aspiring traders as well.

Who in past might have known that such a simple number sequence like Fibonacci numbers would have a great impact on a lot of things today? Maybe, not even Fibonacci himself.