English and Logical Reasoning Prep Guide
- Exam
- English and Logical Reasoning Prep Guide
- Subject
- Logical Reasoning
- Chapter
- Data Sufficiency
English and Logical Reasoning Prep Guide · Logical Reasoning · Data Sufficiency
Directions: Each of the following consists of a question and two...
Directions: Each of the following consists of a question and two statements numbered I and II given below it. You have to decide whether the data provided in the statements are sufficient to answer the question.
Ten persons live in a 10-storey building such that only one person lives on each floor. The topmost floor is numbered as 10 and the bottom most floor is numbered as 1. H doesn’t live on an odd numbered floor. How many floors are between the floors on which H and U live?
Statement I : B lives three floors above U, who lives on an odd numbered floor below floor number 7.& A’s floor number is a perfect square but not an odd numbered floor. H lives two floors below A. B and D live at a gap of one floor.
Statement II : D lives two floors above C. Only four persons live between U and D. H lives adjacent to B. No body lives above F. U lives three floors below C at an even numbered floor. D is not adjacent to F. At least two floors are there between B and C.
Statement I : B lives three floors above U, who lives on an odd numbered floor below floor number 7.& A’s floor number is a perfect square but not an odd numbered floor. H lives two floors below A. B and D live at a gap of one floor.
Statement II : D lives two floors above C. Only four persons live between U and D. H lives adjacent to B. No body lives above F. U lives three floors below C at an even numbered floor. D is not adjacent to F. At least two floors are there between B and C.
Options
- AIf the data in statement I is sufficient to answer the question.
- BIf the data in statement II is sufficient to answer the question.
- CIf the data in either statement I or statement II is sufficient to answer the question.
- DIf the data in both statement I and statement II are necessary to answer the question.
Correct answer
B. If the data in statement II is sufficient to answer the question.
Step-by-step solution
Ten persons live in a 10-storey building such that only one person lives on each floor. The topmost floor is numbered as 10 and the bottom most floor is numbered as 1. H doesn’t live on an odd numbered floor. How many floors are between the floors on which H and U live?
Statement I: B lives three floors above U, who lives on an odd numbered floor below floor number 7.& A’s floor number is a perfect square but not an odd numbered floor. H lives two floors below A. B and D live at a gap of one floor.
Statement II: D lives two floors above C. Only four persons live between U and D. H lives adjacent to B. No body lives above F. U lives three floors below C at an even numbered floor. D is not adjacent to F. At least two floors are there between B and C.
Checking statement I:
Statement I: B lives three floors above U, who lives on an odd numbered floor below floor number 7.& A’s floor number is a perfect square but not an odd numbered floor. H lives two floors below A. B and D live at a gap of one floor.
Statement II: D lives two floors above C. Only four persons live between U and D. H lives adjacent to B. No body lives above F. U lives three floors below C at an even numbered floor. D is not adjacent to F. At least two floors are there between B and C.
Checking statement I:
| Floor number | Case-1 | Case-2 |
| Persons | Persons | |
| 10 | D/ | |
| 9 | ||
| 8 | B | D |
| 7 | ||
| 6 | D/ | B |
| 5 | U | |
| 4 | A | A |
| 3 | U | |
| 2 | H | H |
| 1 |
Thus we cannot determine a single answer to the given question with the help of statement I.
Hence data in statement I is not sufficient.
Checking statement II:
| Floor number | Case-1 | Case-2 Eliminated [D is not adjacent to F] |
| Persons | Persons | |
| 10 | F | F |
| 9 | B | D |
| 8 | H | |
| 7 | D | C |
| 6 | ||
| 5 | C | |
| 4 | U | |
| 3 | ||
| 2 | U | |
| 1 |
Clearly there are 5 floors between H and U.
Hence data in statement II is sufficient.
Hence option B is correct.