
CoStudy
Flashcards & Exam Prep
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What's New in CoStudy
1.1.0
October 13, 2026
Know when you're ready • Free readiness diagnostic for the SIE, Series 7, 65 and 66, and CPA FAR, AUD and REG. 30 questions, no account needed. • A projected score with a likely range, measured against the pass mark. • Your accuracy in every area of the official exam outline, so a weak area can't hide behind a strong one. • A daily plan to exam day that puts your practice where it raises your score most. • Start from the new box on the home screen. • After your exam date, tell us how it went. It helps us make the score more accurate. Better questions • Answer explanations corrected across the catalog. • Grade 5, 11 and 12 question banks rewritten, with an explanation for every answer choice. • Spot something wrong? Tap "Report a problem with this question" after you answer. Also • Sign in to keep your readiness score on any device. • A refreshed header and menu that match costudy.net.
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Series 66
Full bank: cards, MCQs, practice exams





