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Data Sufficiency Question Bank - Practice Questions

A data sufficiency question has a question followed by two statements. You will be expected to answer if the information provided in the statements is sufficient to answer the question.

You answer will be

1. Choice 1 if the question can be answered using one of the statements alone, while the other statement is not sufficient to answer the question.
2. Choice 2 if the question can be answered using each of the statements independently
3. Choice 3 if both the statements together are needed to answer the question
4. Choice 4 if both the statements independently or taken together are not sufficient to answer the question

A collection of questions that typically appear from the topic of data sufficiency.

1. Question 1:  How long will it take for two pipes A and B to fill an empty cistern if they worked alternately for an hour each?
   
   (A) Working alone, Pipe A can fill the cistern in 40 hours
   (B) Pipe B is one third as efficient as Pipe A
   
   Explanatory Answer »
   
   
2. Question 2:  What is the value of X, if X and Y are two distinct integers and their product is 30?
   
   (A) X is an odd integer
   (B) X > Y
   
   Explanatory Answer »
   
   
3. Question 3:  The set S of numbers has the following properties:
   
   I) If x is in S, then 1/x is in S.
   II) If both x and y are in S, then so is x + y. Is 3 in S?
   
   (A) 1/3 is in S.
   (B) 1 is in S.
   
   Explanatory Answer »
   
   
4. Question 4:  Is x = y?
   
   (A) = 4
   (B) (x – 50)² = (y – 50)²
   
   Explanatory Answer »
   
   
5. Question 5:  Is the smallest of five consecutive integers even?
   
   (A) The product of the five integers is 0
   (B) The arithmetic mean of the five integers is 0.
   
   Explanatory Answer »
   
   
6. Question 6:  Is X a prime number, given that X is a positive integer?
   
   (A) X⁴ > 3000
   (B) X⁴ < 10,000
   
   Explanatory Answer »
   
   
7. Question 7:  Is m divisible by 6?
   
   (A) m is divisible by 3
   (B) m is divisible by 4
   
   Explanatory Answer »
   
   
8. Question 8:  If a salesman received a commission of 3% of the sales that he has booked in a month, what was the sales booked by the salesman in the month of November 2003?
   
   Explanatory Answer »
   
   

CAT Practice Questions and Answers : Listed Topicwise

Number Theory		Permutation Combination		Probability		Inequalities
Geometry		Mensuration		Trigonometry		Data sufficiency
Percentages		Profit Loss		Ratio Proportion		Mixtures Alligation
Speed Time Distance		Pipes Cisterns		Interest		Races
Average, Mean		AP, GP, HP		Set Theory		Clocks Calendars
Algebra		Function		English Grammar		General Awareness