As only 1 mark is given per question, and these questions [known as Zs] often take a long time, always take a random guess and leave until all other questions have been answered.
Be careful of the wording, some say which statement MUST be true and others which statement CANNOT be true.
Use diagrams and tables showing all the information. Ring key words, must, cannot, year after next, twice the amount, all but Alice , all except john etc etc.
Practice, practice, practice.
Thank you, we'll do that.