The ICC Exam Master Plumber w/Gas – G27-N and Master Mechanical – G29-N Online Exam Prep includes the following: Highlighting Guides, Practice Exams, Math and Calculations, Study Tips, Licensing Information, Instructor Support. The highlighting guides and quizzes are designed to familiarize students with testing materials. We do not provide students with exact test questions, as the state does not release this information. With over 100,000 satisfied students and a course catalog of over 1,000 classes, we are here to help you – Invest in Yourself. We do not provide students with exact test questions, as the state does not release this information.