Data Sufficiency Questions

Q:

How is B related to A ? 

I. A is B's sister. 

II. is the father of A and B. 

A) If the data in statement I alone are sufficient to answer the question B) If the data in statement II alone are sufficient answer the question
C) If the data either in I or II alone are sufficient to answer the question; D) If the data even in both the statements together are not sufficient to answer the question
 
Answer & Explanation Answer: D) If the data even in both the statements together are not sufficient to answer the question

Explanation:

From statements I and II together, we can conclude only that either B is the sister or brother of A.

So, even from both the statements, the exact relation cannot be known. 

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Q:

How much amount Ronnie required to pay for the new car in the buy-back scheme ?

I. The cost of the new car was three times the cost price of his old car. 

II. His old car was valued at Its 25000 under buy-back scheme. 

A) If the data in statement I alone are sufficient to answer the question B) If the data in statement II alone are sufficient answer the question
C) If the data either in I or II alone are sufficient to answer the question; D) If the data in both the statements together are needed.
 
Answer & Explanation Answer: D) If the data in both the statements together are needed.

Explanation:

From both the statements together, we conclude that the price of the new car is Rs (25000 * 3) i.e. Rs 75000

So, Ronnie had to pay Rs (75000 - 25000) i.e. Its 50000.

Thus, both I and II are required 

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5 10891
Q:

What is Manohar's birthday ? 

I. Manohar's father was born on 27th May, 1948. 

II. Manohar is 25 years younger than his mother. 

A) If the data in statement I alone are sufficient to answer the question B) If the data in statement II alone are sufficient answer the question
C) If the data either in I or II alone are sufficient to answer the question; D) If the data even in both the statements together are not sufficient to answer the question
 
Answer & Explanation Answer: D) If the data even in both the statements together are not sufficient to answer the question

Explanation:

 Clearly, even both the statements together do not reveal Manohar's birthday. 

 

 

 

 

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2 10829
Q:

How is B related to A ? 

I. A is B's sister. 

II. is the father of A and B. 

A) If the data in statement I alone are sufficient to answer the question B) If the data in statement II alone are sufficient answer the question
C) If the data either in I or II alone are sufficient to answer the question; D) If the data even in both the statements together are not sufficient to answer the question
 
Answer & Explanation Answer: D) If the data even in both the statements together are not sufficient to answer the question

Explanation:

From statements I and II together, we can conclude only that either B is the sister or brother of A.

So, even from both the statements, the exact relation cannot be known. 

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1 10711
Q:

Rakesh scored more than Raju

Ravi scored less than Rakesh

Raju scored more than Ravi

Ranga score more than Raju but less than Rakesh

Then who is the top scorrer among them ?

A) Ranga B) Raju
C) Rakesh D) Ravi
 
Answer & Explanation Answer: C) Rakesh

Explanation:

1. Rakesh

2. Ranga

3. Raju

4. Ravi

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8 10354
Q:

How many gift boxes were sold on Monday ?  

I. It was 10% more than the boxes sold on the earlier day i.e. Sunday. 

II. Every third visitor to the shop purchased the box and 1500 visitors were there on Sunday  

A) If the data in statement I alone are sufficient to answer the question B) If the data in statement II alone are sufficient answer the question
C) If the data either in I or II alone are sufficient to answer the question; D) If the data in both the statements together are needed.
 
Answer & Explanation Answer: D) If the data in both the statements together are needed.

Explanation:

From II. we can conclude that 500 boxes were sold on Sunday

 From I. we find that number of boxes sold on Monday 500 +10% of 500 = 550.  

 

 

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2 10285
Q:

What is the price range of ordinary wall clocks ? 

I. The price range of ordinary wrist watches of company X is Rs 400 to Rs 600. 

II. The price range of ordinary wall clocks of company X is 50 percent that of their ordinary watches. 

A) If the data in statement I alone are sufficient to answer the question B) If the data in statement II alone are sufficient answer the question
C) If the data either in I or II alone are sufficient to answer the question; D) If the data even in both the statements together are sufficient to answer the question
 
Answer & Explanation Answer: D) If the data even in both the statements together are sufficient to answer the question

Explanation:

From both the statements together, we can conclude that the price range of ordinary wall clocks is Rs 200 to Rs 300. Thus, both I and II are required 

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7 9579
Q:

Four subjects — Physics, Chemistry, Mathematics and Biology were taught in four consecutive periods of one hour each starting from 8.00 a.m. At what time was the Chemistry period scheduled ?  

I. Mathematics period ended at 10.00 a.m. which was preceded by Biology. 

II. Physics was scheduled in the last period. 

III. Mathematics period was immediately followed by Chemistry. 

A) Only I B) Only I or Only II
C) Only II D) I and II together or I and III together
 
Answer & Explanation Answer: D) I and II together or I and III together

Explanation:

From I and II. we conclude that Mathematics period began at 9.00 a.m., Biology period began at 8.00 a.m. and Physics period began at 11 a.m. So. the Chemistry period began at 10.00 a.m. From I and III, we conclude that Mathematics period ended and Chemistry period began at 10.00 a.m.  

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