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.
Six laptop brands viz. Apple, Lenovo, Acer, Dell, Sony and Hp have different ratings from 1 to 6. No two laptop brands have same rating. Rating 1 being the highest and 6 being the lowest. Which laptop brand is rated 3rd?
Statement I:& Apple is rated higher than Lenovo, whose rating is just lower than Sony. Dell's rating is ahead of two laptops only, one of them is Lenovo.
Statement II:& No other laptop brand has a better rating than Hp. Acer is rated higher than Apple, which is rated higher than at least two laptops.
Statement I:& Apple is rated higher than Lenovo, whose rating is just lower than Sony. Dell's rating is ahead of two laptops only, one of them is Lenovo.
Statement II:& No other laptop brand has a better rating than Hp. Acer is rated higher than Apple, which is rated higher than at least two laptops.
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
D.
If the data in both statement I and statement II are necessary to answer the question.
Step-by-step solution
Reference:
Statement I:& Apple is rated higher than Lenovo, whose rating is just lower than Sony. Dell's rating is& ahead of two laptops& only, one of them is Lenovo.
Statement II:& No other laptop brand has a& better rating than Hp. Acer is rated higher than Apple, which is rated higher than at least two laptops.
Inference:
Checking statement I:
Apple > Dell > Sony > Lenovo
But we don't know the rating of other laptops, thus Apple final sequence can't be obtained.
Statement I:& Apple is rated higher than Lenovo, whose rating is just lower than Sony. Dell's rating is& ahead of two laptops& only, one of them is Lenovo.
Statement II:& No other laptop brand has a& better rating than Hp. Acer is rated higher than Apple, which is rated higher than at least two laptops.
Inference:
Checking statement I:
Apple > Dell > Sony > Lenovo
But we don't know the rating of other laptops, thus Apple final sequence can't be obtained.
Hence data in statement I alone is not sufficient to answer the question.
Checking statement II:
Hp > Acer > Apple > _ > _ > _ or
Hp > Acer > _ > Apple > _ > _ or
Hp > _ > Acer > Apple > _ > _
But we cannot determine the laptop& whose rating is three.
Hence data in statement II alone is not sufficient to answer the question.
Checking statements I and II:
Statement I:& Apple is rated higher than Lenovo, whose rating is just lower than Sony. Dell's rating is& ahead of two laptops& only, one of them is& Lenovo.
Statement II:& Nobody has Apple better rating than Hp. Acer is rated higher than Apple, which is rated higher than at least two laptops.
Hp > Acer > Apple > Dell > Sony > Lenovo
Clearly, Apple is rated three.
Hence data in statement I and statement II together is necessary to answer the question.
Hence option D& is correct.
Hence option D& is correct.