Reference for Exercises

Your comments are automatically posted once they are submitted. All comments are however constantly reviewed for spam and irrelevant material (such as product or personal advertisements, email addresses, telephone numbers and website address). Such insertions do not conform to our policy and 'Terms of Use' and are either deleted or edited and republished.
Please keep your comments brief and relevant.This section may also have questions seeking help. If you have the information you are welcome to respond, but please ensure that the information so provided is genuine and not misleading.