Start learning →

RRB NTPC Data Sufficiency — practice questions — page 2

Explore 46 free Data Sufficiency questions in RRB NTPC Reasoning. Open each question or exercise to read its content, reference answers and available explanation.

Practise Data Sufficiency with Quill →

Data Sufficiency questions and exercises with answers

Showing questions 31–46 of 46.

Class strength? I: 30% are girls. II: There are 21 boys.Read the answer and worked solution →How is A related to B? I: A is B's mother's brother. II: B is a girl.Read the answer and worked solution →Is Q the father of R? I: Q is male. II: R is Q's child.Read the answer and worked solution →Sides of a regular polygon? I: Each interior angle is 140 degrees. II: Exterior angles total 360.Read the answer and worked solution →Is y greater than x? I: y = x + 3. II: x is a positive integer.Read the answer and worked solution →Is integer n positive? I: n squared equals n. II: n is not zero.Read the answer and worked solution →Is every A a C? I: Every A is a B. II: Every B is a C.Read the answer and worked solution →Is some A a C? I: All A are B. II: Some B are C.Read the answer and worked solution →Find the two-digit number. I: Digits add to 9. II: Reversing adds 27 to it.Read the answer and worked solution →Is the point (a, b) in the first quadrant? I: a > 0. II: b > 0.Read the answer and worked solution →What does a data sufficiency question ask the test taker to decide?Read the answer and worked solution →A system with fewer equations than unknowns is generally called what?Read the answer and worked solution →A linear system with no solution at all is called what?Read the answer and worked solution →An inconsistent linear system can always be rewritten as which statement?Read the answer and worked solution →What do independent equations each provide about the variables?Read the answer and worked solution →Three distinct parallel planes in space have what solution set?Read the answer and worked solution →

Worked practice questions

Class strength? I: 30% are girls. II: There are 21 boys.

  1. I alone suffices
  2. II alone suffices
  3. Neither, even together
  4. Both together needed
Show answer and solution

Correct answer: D. Both together needed

Boys are 70% of the class, so 21 divided by 0.7 gives 30 students.

Open this question →

How is A related to B? I: A is B's mother's brother. II: B is a girl.

  1. II alone suffices
  2. I alone suffices
  3. Both together needed
  4. Neither, even together
Show answer and solution

Correct answer: B. I alone suffices

A mother's brother is the maternal uncle whatever B's gender is.

Open this question →

Is Q the father of R? I: Q is male. II: R is Q's child.

  1. Both together needed
  2. I alone suffices
  3. II alone suffices
  4. Neither, even together
Show answer and solution

Correct answer: A. Both together needed

A male parent is a father, so the child link and the gender are both required.

Open this question →

How to practise

  1. Choose a Data Sufficiency question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

Put it into practice

Continue with Data Sufficiency practice for RRB NTPC. Read explanations as you go. No signup form needed to start.

Practise Data Sufficiency →

More Reasoning topics

Order of OperationsFloor PuzzleNumber SeriesVenn DiagramsData InterpretationStatement and Courses of ActionSyllogismCoding Decoding