Series 51 Cheat Sheet.
The night-before summary, built like the exam.

The numbers to remember

• 60 scored questions plus 5 unscored pretest questions — 65 total on your screen.
• 105 minutes (1 hour 45 minutes) total time.
• Passing score: 70% of the scored questions.
• Exam fee: $255.
• Corequisite: Series 24 or Series 26, held previously or concurrently.
• Eligibility: must be associated with an MSRB registered dealer.
• Exam has been effective since 01/2003.

Content domains and weights

• Product Knowledge — 27% (largest part)
• Sales Supervision — 18%
• Fair Practice and Conflicts of Interest — 17%
• General Supervision — 17%
• Operations — 10%
• Underwriting and Disclosure Obligations — 6%
• Regulatory Structure — 5%

High-yield review areas

• Product Knowledge and Sales Supervision are the two largest single parts of the exam — review these first and most often.
• Fair Practice/Conflicts and General Supervision are each weighted 17% — treat them as a linked pair since supervisory duty and conflict-of-interest rules overlap.
• Don't ignore Operations, Underwriting/Disclosure, and Regulatory Structure — combined they're still a fifth of the exam and can swing a borderline pass.
• Because pretest questions are unidentified, review pacing that treats every question as scored is the safest habit to build now.
• Since only 60 of 65 questions determine your grade, mentally anchor your 70% target to that scored pool rather than the full screen count.

Top traps

• Assuming all 65 questions count. Only 60 are scored; the 5 pretest items are mixed in and invisible — never assume you can skip or rush any single question.
• Underweighting supervision topics. Fair Practice/Conflicts and General Supervision are each weighted as heavily as Sales Supervision — don't let the excitement of product detail crowd out supervisory rule review.
• Ignoring the small parts. Regulatory Structure and Underwriting/Disclosure are each a small slice, but skipping them entirely leaves easy points on the table.
• Misjudging pacing. With 105 minutes for 65 questions, budget roughly 1.5 minutes per question and leave a buffer for review — don't burn excess time on any single item.
• Forgetting the corequisite. Confirm your Series 24 or Series 26 registration is filed before scheduling; a missing corequisite can delay your eligibility to sit.
• Treating this as a standalone exam. Series 51 builds on Series 24/26 principal knowledge, so gaps in that foundation will show up here too — a quick refresh of core supervisory concepts pays off even if you passed your principal exam long ago.