Korn Ferry Assessment Korn Ferry Logical Reasoning 5 — Questions and Answers
Question 1: Statement: 'None of the reports submitted on time had errors.' Which conclusion follows?
- All reports with errors were submitted late. (Correct answer)
- Some late reports had errors.
- All late reports had errors.
- No reports had errors.
Correct answer: All reports with errors were submitted late.
If no on-time report had errors, then any report with errors must have been submitted late — the contrapositive of the original statement.
Question 2: Which number replaces the '?' in: 8, 4, 2, 1, 0.5, ?
- 0.1
- 0.25 (Correct answer)
- 0.5
- 0.2
Correct answer: 0.25
Each term is halved: 0.5 ÷ 2 = 0.25.
Question 3: An argument concludes: 'This strategy succeeded in the US market, so it will succeed globally.' What logical flaw does this contain?
- False dichotomy
- Hasty generalization (Correct answer)
- Circular reasoning
- Ad hominem
Correct answer: Hasty generalization
Inferring global success from one market's result without adequate evidence is a hasty generalization.
Question 4: Three teams submitted proposals: Red, Blue, Green. The winning proposal was not from Red. Green did not win. Which team won?
- Red
- Green
- Blue (Correct answer)
- Cannot be determined
Correct answer: Blue
Eliminating Red and Green leaves Blue as the only possible winner.
Question 5: If 'whenever the economy grows, consumer confidence rises,' and 'consumer confidence has not risen,' what follows?
- The economy is growing.
- The economy has not grown. (Correct answer)
- Consumer confidence will rise later.
- The economy will shrink.
Correct answer: The economy has not grown.
By modus tollens: if growth → confidence, and confidence did not rise, then the economy did not grow.
Question 6: A matrix has 3 rows and 3 columns. Row sums are 15, 21, 18. Column sums are 16, 20, and X. What is X?
- 16
- 17
- 18 (Correct answer)
- 19
Correct answer: 18
Total of all rows = 15 + 21 + 18 = 54; column sums must also total 54, so X = 54 − 16 − 20 = 18.
Question 7: Analogy: Flaw is to Argument as Bug is to ___.
- Computer
- Software (Correct answer)
- Programmer
- Output
Correct answer: Software
A flaw undermines an argument's validity just as a bug undermines software's correct functioning.
Korn Ferry Assessment Korn Ferry Logical Reasoning 5
Statement: 'None of the reports submitted on time had errors.' Which conclusion follows?