Korn Ferry Assessment Korn Ferry Logical Reasoning 4 — Questions and Answers
Question 1: A Venn diagram shows Group X (engineers) and Group Y (project managers). The overlap contains 8 people. Group X has 20 total, Group Y has 15 total. How many people are in X or Y but not both?
- 19
- 27 (Correct answer)
- 35
- 43
Correct answer: 27
(20 − 8) + (15 − 8) = 12 + 15 = 27 people are in exactly one of the two groups.
Question 2: The pattern: A1, C3, E5, G7, ___. What comes next?
- H8
- I9 (Correct answer)
- J10
- H9
Correct answer: I9
Letters skip one (A, C, E, G, I) and numbers increase by 2 (1, 3, 5, 7, 9), giving I9.
Question 3: Which of the following is the strongest assumption underlying: 'We should hire more staff because customer wait times are too long'?
- Staff enjoy working here.
- Additional staff will reduce customer wait times. (Correct answer)
- Customers complain frequently.
- Wait times are measured accurately.
Correct answer: Additional staff will reduce customer wait times.
The conclusion that hiring more staff solves wait times depends on the assumption that more staff directly reduces those times.
Question 4: If 'some analysts are optimistic' and 'all optimistic people invest in growth stocks,' what can be concluded?
- All analysts invest in growth stocks.
- No analysts invest in growth stocks.
- Some analysts invest in growth stocks. (Correct answer)
- Most analysts avoid growth stocks.
Correct answer: Some analysts invest in growth stocks.
The optimistic analysts (a subset of analysts) must invest in growth stocks, so 'some analysts' invest in growth stocks.
Question 5: A logic grid: Three candidates scored High, Medium, or Low. Candidate 1 did not score Low. Candidate 2 scored higher than Candidate 3. Candidate 3 scored Low. What did Candidate 1 score?
- Low
- Medium or High (Correct answer)
- Medium only
- High only
Correct answer: Medium or High
Candidate 3 scored Low; Candidate 2 scored higher than Low (so Medium or High); Candidate 1 did not score Low, leaving Medium or High.
Question 6: Which best describes an 'inductive' reasoning approach?
- Drawing a specific conclusion from a general rule.
- Forming a general rule from specific observations. (Correct answer)
- Proving a statement using formal mathematical logic.
- Disproving a claim by finding one counterexample.
Correct answer: Forming a general rule from specific observations.
Inductive reasoning moves from specific cases to a broader generalization, unlike deductive reasoning which moves from general to specific.
Question 7: A project has tasks P, Q, R. P must finish before Q starts. Q must finish before R starts. P takes 4 days, Q takes 3 days, R takes 5 days. What is the minimum project duration?
- 9 days
- 10 days
- 12 days (Correct answer)
- 7 days
Correct answer: 12 days
Tasks are fully sequential, so total = 4 + 3 + 5 = 12 days.
Korn Ferry Assessment Korn Ferry Logical Reasoning 4
A Venn diagram shows Group X (engineers) and Group Y (project managers).
The overlap contains 8 people.
Group X has 20 total, Group Y has 15 total.
How many people are in X or Y but not both?