About this practice test
A full-length mock exam that mirrors the real test:
- 150 questions · 2.5 hours (PSI series 17-56)
- Pass: 70% (105 correct)
- Content mix uses the DFS 17-56 topic-locator weights (2018–19 edition, the latest published); PSI may have updated them
Take it under real conditions — answers and explanations are shown at the end.