EDPT - Electronic Data Processing Logical Deduction Puzzles Questions and Answers — Questions and Answers
Question 1: Five data analysts—Li, Marco, Priya, Sam, and Tara—are each assigned to a different project: Alpha, Beta, Gamma, Delta, or Epsilon. Li is not assigned to Alpha or Gamma. Sam is assigned to Epsilon. Priya is assigned to Beta. Marco is not assigned to Alpha. If Tara is assigned to Alpha, which project must Li be assigned to?
- Gamma
- Alpha
- Delta (Correct answer)
- Beta
Correct answer: Delta
We can deduce the assignments step-by-step. We are given: Sam = Epsilon, Priya = Beta, Tara = Alpha. The remaining analysts are Li and Marco, and the remaining projects are Gamma and Delta. The initial statements say that Li is not assigned to Gamma. Therefore, Li must be assigned to the only other available project, which is Delta. Marco is then assigned to Gamma.
Question 2: Consider the following statements: 1. All network routers are electronic devices. 2. Some electronic devices require cooling fans. 3. No servers are network routers. Based on these statements, which of the following conclusions is logically valid?
- Some network routers require cooling fans.
- No servers are electronic devices.
- All network routers are servers.
- No valid conclusion can be drawn about the relationship between network routers and cooling fans. (Correct answer)
Correct answer: No valid conclusion can be drawn about the relationship between network routers and cooling fans.
Statement 1 says all routers are electronic devices. Statement 2 says SOME electronic devices require fans. This does not mean that the specific electronic devices that are routers are the ones that require fans. There is no direct or necessary link between routers and cooling fans. The other options are incorrect: 'No servers are electronic devices' cannot be concluded, and 'All network routers are servers' contradicts statement 3.
Question 3: On a server rack, there are four servers: A, B, C, and D. Their status lights can be green, yellow, or red. From the following conditions, determine the color of Server C's light: 1. If Server A's light is green, then Server B's light is yellow. 2. Server D's light is red. 3. If Server B's light is yellow, then Server C's light is the same color as Server D's. 4. Server A's light is green.
- Green
- Red (Correct answer)
- Yellow
- Cannot be determined
Correct answer: Red
This is a chain of conditional statements. From condition 4, we know Server A's light is green. According to condition 1, if A is green, then B must be yellow. Now we know B is yellow. According to condition 3, if B is yellow, then C's light is the same color as D's. From condition 2, we know D's light is red. Therefore, Server C's light must be red.
Question 4: Four technicians (Adams, Bell, Clark, Davis) are each proficient in a different coding language (Python, Java, C++, SQL). - Adams is not proficient in Java or C++. - Bell is proficient in SQL. - Clark is not proficient in Java. Which of the following must be true?
- Davis is proficient in C++.
- Adams is proficient in SQL.
- Clark is proficient in Python. (Correct answer)
- Davis is proficient in Python.
Correct answer: Clark is proficient in Python.
Let's use a logic grid. Bell is proficient in SQL, so we can assign that. This means no one else is proficient in SQL. Adams is not proficient in Java or C++, and we know he's not proficient in SQL (because Bell is), so Adams must be proficient in Python. Now only Java and C++ are left for Clark and Davis. Clark is not proficient in Java, so he must be proficient in C++. This leaves Davis, who must be proficient in Java. Therefore, the statement 'Clark is proficient in Python' is the only one that must be true based on the deductions.
Question 5: A system will only run a diagnostic if there is a system error. A system error is present. However, the system is not running a diagnostic. Which of the following statements could explain this discrepancy?
- The system never runs diagnostics.
- A system error does not always trigger a diagnostic.
- The diagnostic can only be run if an administrator is logged in, and no administrator is logged in. (Correct answer)
- The initial premise that the system runs a diagnostic if there is an error is false.
Correct answer: The diagnostic can only be run if an administrator is logged in, and no administrator is logged in.
The original rule is 'If Error, then Diagnostic'. But the outcome is 'Error' and 'No Diagnostic'. This contradicts the rule. The most logical explanation is an additional, unstated necessary condition that has not been met. Choice C provides such a condition: the need for an administrator to be logged in. The absence of an administrator would prevent the diagnostic from running, even though the primary condition (system error) has been met.
Question 6: There are three network cabinets: Cabinet 1, Cabinet 2, and Cabinet 3. One cabinet contains the main server, another contains the backup server, and the third is empty. Each cabinet has a label, but all three labels are incorrect. - Label on Cabinet 1 says: 'Main Server' - Label on Cabinet 2 says: 'Empty' - Label on Cabinet 3 says: 'Backup Server' You are told that Cabinet 3 does not contain the Main Server. Where is the Main Server located?
- Cabinet 1
- Cabinet 2 (Correct answer)
- Cabinet 3
- It is impossible to determine
Correct answer: Cabinet 2
We know all labels are wrong. Let's analyze Cabinet 2. Its label says 'Empty'. Since this is wrong, Cabinet 2 must contain either the Main Server or the Backup Server. Now consider Cabinet 3. Its label says 'Backup Server', which is wrong, so it contains either the Main Server or is Empty. We are given the additional clue that Cabinet 3 does NOT contain the Main Server. Therefore, Cabinet 3 must be Empty. Now we know Cabinet 3 is Empty and Cabinet 1's label ('Main Server') is wrong. Since Cabinet 3 is Empty, Cabinet 1 must contain the Backup Server. By elimination, Cabinet 2 must contain the Main Server.
EDPT - Electronic Data Processing Logical Deduction Puzzles Questions and Answers
Five data analysts—Li, Marco, Priya, Sam, and Tara—are each assigned to a different project: Alpha, Beta, Gamma, Delta, or Epsilon.
Li is not assigned to Alpha or Gamma.
Sam is assigned to Epsilon.
Priya is assigned to Beta.
Marco is not assigned to Alpha.
If Tara is assigned to Alpha, which project must Li be assigned to?