International · Level 1

CFA Level 1 free practice questions with answers

Read question 1 and its full worked answer from paper 1 of our 20-paper CFA Level 1 set, then download the 3-page PDF. These are original practice questions, not official past papers. Page updated 3 November 2026.

Question 1

On close inspection, a limitation of the N-firm concentration ratio as a measure of market power is that it:

A. Accounts fully for potential entry from outside the market.

B. Ignores the effect of mergers among the largest firms already counted.

C. Always overstates competition relative to the Herfindahl-Hirschman Index.

Worked answer

Correct answer: B Ignores the effect of mergers among the largest firms already counted.

The concentration ratio sums the shares of the top N firms but is insensitive to mergers among those already within the top N and ignores barriers to entry. The HHI squares shares and is more sensitive to such changes.

Why the other options are wrong:

Always overstates competition relative to the Herfindahl-Hirschman Index. — the concentration ratio can understate or overstate competition; the specific flaw is insensitivity to mergers within the top N.

Accounts fully for potential entry from outside the market. — neither measure captures potential entry; both are static snapshots.

[EI · Forms of market efficiency]

Download the free sample: 3 questions and answers (PDF)

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Questions about this sample

What is in the CFA Level 1 free sample?

The first 3 questions from paper 1 of the set, in the real exam layout, followed by the step-by-step worked answers. It is a 3-page PDF; this page shows question 1 with its answer.

How many full CFA Level 1 papers are there?

20 original papers for candidates preparing for the CFA Level 1 exam. Each is 180 multiple-choice questions (3 options each) in 4 hours 30 minutes, in two sessions, with a worked solution for every question. Papers start at A$19.99 and download instantly as a PDF.

Are these official past papers?

No. The sample is taken from our own original practice paper and is not an official past paper or affiliated with any exam authority.