Data Sufficiency Questions in Logical Reasoning

Data Sufficiency questions in logical reasoning comprise a few conditions and candidates need to analyse which of the given conditions may help get an answer or solution to the question.

These questions are mostly asked to test the logical and analytic skills of the candidate. Mostly 4-5 data sufficiency questions are asked in the reasoning ability section, and candidates can easily score well in such questions.

To get a list of the topics which are included in the logical reasoning syllabus, candidates can visit the linked article.

In this article, 20 data sufficiency questions for the Reasoning Ability and General Intelligence section have been given along with their solutions. Candidates can solve these sample questions and prepare this topic well enough for the upcoming competitive exams. 

Interested candidates can also know more about the various Government exams conducted in the country, along with their selection process, important dates and other relevant information at the linked article.

20 Data Sufficiency Questions and Answers PDF:-Download PDF Here

Related Logical Reasoning Concept Articles:

Data Sufficient Questions & Answers

Before moving on to solving questions based on data sufficiency, it is important that a candidate is well aware of the concept and understands how questions need to be answered. 

Thus, candidates willing to learn about this concept can visit the Data Sufficiency page and know more about the concept and get some tricks and tips to answer such questions. 

Directions (Q1 – Q20): In each of the following questions, a few statements have been given. Analyse the given statements and answer whether the data given in the statements are sufficient to answer the question or not.

Q 1. Six Professors have been assigned to take up lectures in a week, starting from Monday till Saturday. The six Professors are Mandeep, Nitin, Ondrilla, Pankhuri, Yukti and Rati. How many Professors conduct lectures before Ondrilla?

Statement I: Pankhuri conducts her lecture at least before three people. Mandeep gave the lecture conducted on Philosophy on Tuesday.

Statement II: Yukti is given the lecture before at least one of the other lecturers. Ondrilla conducted her Physics lecture immediately on the next day as Pankhuri’s lecture.

Statement III: A minimum of four lectures were conducted after Nitin’s lecture

1. If data in Statement I alone is sufficient
2. If data in all Statement I, II & III is sufficient
3. If data in only Statement II & III is sufficient
4. If data in only Statement III is sufficient
5. If data in only Statement I & II is sufficient

Q 2. Who among the five friends viz. A, B, C, D & E is the tallest?

Statement I: B is only taller than D

Statement II: A is shorter than E but taller than C

Statement II: B is not the shortest

1. If statement II alone is sufficient
2. If statement I & II together are sufficient
3. If statement I, II & III together are not sufficient
4. If statement I & III are sufficient
5. None of the above

Q 3. Who is the wife of Z?

Statement I: H is the only daughter of X. K is the paternal uncle of X.

Statement II: K is the brother-in-law of X

Statement III: K and Z are brothers

1. If statement I, II & III together are sufficient
2. If only statement II & III are sufficient
3. If only statement I is sufficient
4. If only statement I & II are sufficient
5. None of the above

Q 4. How is M related to N?

Statement I: N’s sister F has married H’s brother G.

Statement II: M is the only daughter of G and F.

1. If statement I alone is sufficient
2. If statement II alone is sufficient
3. If both statements I and II together are sufficient
4. If either statement I or II is sufficient
5. If neither statement I and II is sufficient

Q 5. What is the code for ‘sky’ in the code language?

Statement I: In the code language, ‘get set jet’ means ‘kite flying sky’.

Statement II: In the same code language, ‘jet ket pet’ means ‘sky is blue’.

1. If statement I alone is sufficient
2. If statement II alone is sufficient
3. If statement I and II together are sufficient
4. If neither statement I nor II is sufficient
5. If either statement I or II is sufficient

Other related links:

Q 6. Who among Mukund, Karan, Ajay and Sanjay is the youngest?

Statement I: Mukund is elder than Karan. Sanjay is younger than Karan

Statement II: Ajay is younger than Karan and elder than Sanjay

1. If only statement I is sufficient
2. If both statements I and II are sufficient
3. If only statement II is sufficient
4. If neither statement I nor II is sufficient
5. If either statement I or II is sufficient

Q 7. What will be the code for “big”?

Statement I: In a certain code language, “butterfly is beautiful” is written as “es je ik”

Statement II: In the same code language, “box is big” is written as “ik ej ze” and “blow the big balloon” is written as “ze ak xo il”

1. I statement I alone is sufficient
2. If both statements I and II are sufficient
3. If neither statement I nor II is sufficient
4. If either statement I or II is sufficient
5. If only statement II is sufficient

Q 8. Five lectures are to be conducted between Monday to Friday. On which day will the history lecture be conducted?

Statement I: The English Literature lecture is conducted on Thursday, immediately after the Philosophy lecture

Statement II: Physics lecture is not scheduled for the last day and three lectures are conducted after the Chemistry lecture

1. If statement I alone is sufficient
2. If both statements I and II are sufficient
3. If neither statement I nor II is sufficient
4. If either statement I or II is sufficient
5. If only statement II is sufficient

Q 9. Six friends Agrima, Barkha, Charu, Dhriti, Elina and Faiza are sitting around a circular table, facing the centre. Who sits exactly in between Charu and Dhriti?

Statement I: Barkha sits second to the left of Dhriti and only one person sits between Charu and Barkha

Statement II: Agrima sits to the immediate right of Barkha and there are two people sitting between Elina and Dhriti

1. If statement I alone is sufficient
2. If both statements I and II are sufficient
3. If both statements I and II together are not sufficient
4. If either statement I or II is sufficient
5. If only statement II is sufficient

Q 10. What will be the code for “song”?

Statement I: In a certain code language, “listening to music” is written as “se je ke” and “music is peace” is written as “ze ke xe”

Statement II: In the same code language, “dance to music” is written as “ke de me” and “unmute the song” is written as “ne pe re”

1. If statement I alone is sufficient
2. If both statements I and II are sufficient
3. If both statements I and II together are not sufficient
4. If either statement I or II is sufficient
5. If only statement II is sufficient

Q 11. Out of five friends, A, B, C, D & E, which one is the heaviest?

Statement I: C is heavier than E and lighter than A. Only one person is heavier than B

Statement II:  Two people are heavier than A and E is the lightest. C is not the heaviest and only one person is heavier than B

1. If statement I alone is sufficient
2. If both statements I and II are sufficient
3. If both statements I and II together are not sufficient
4. If either statement I or II is sufficient
5. If only statement II is sufficient

Q 12. Seven people are sitting in a straight line viz. Gautam, Palak, Varun, Diya, Krishi, Rudra and Lalit. Who among these is sitting exactly in the centre of the line?

Statement I: Gautam is sitting at one of the ends of the line. Varun is sitting third to the right of Gautam

Statement II: Rudra is sitting third to the left of Palak. Lalit is sitting second from the right end of the line

Statement III: Three people sit between Krishi and Palak. Gautam is sitting at one of the ends of the line

1. Only statement I is sufficient 
2. Only statement II is sufficient
3. Only statement III is sufficient
4. All statements I, II & III are sufficient
5. None of the above

Q 13. What will be the code for “Rainbow”?

Statement I: “Sky has rainbow” is coded as “@ # *”

Statement II: “rainbow has seven colours” is coded as “# @ + ?”

Statement III: “blue is one colour of rainbow” is coded as “@ $ & < ^”

1. Only statement I is sufficient 
2. Only statement II is sufficient
3. Only statement III is sufficient
4. All statements I, II & III are sufficient
5. None of the above

Q 14. Which word has been coded as “xz”?

Statement I: “trees are green” is coded as “es le gk”

Statement II: “shrubs are growing” is coded as “gk ae lk” and “plants shrubs trees” is coded as “es lk xz”

1. If statement I alone is sufficient
2. If both statements I and II are sufficient
3. If both statements I and II together are not sufficient
4. If either statement I or II is sufficient
5. If only statement II is sufficient

Q 15. 5 friends – Ankita, Anita, Arpita, Arunima and Amita are sitting around a circular table, facing outside the circle. Who sits on the immediate right of Arpita?

Statement I: Arpita sits in between Anita and Arunima

Statement II: Only one person is sitting between Arunima and Ankita

1. If statement I alone is sufficient
2. If both statements I and II are sufficient
3. If both statements I and II together are not sufficient
4. If either statement I or II is sufficient
5. If only statement II is sufficient

Q 16. Five people are sitting in a straight line: A, B, X, Y and Z. Who is sitting at the right end of the line?

Statement I: Two people are sitting between X and Y. X is sitting at one of the ends of the line

Statement II: Z sits to the immediate right of Y and B is on the immediate left of Y

Statement III: A is sitting exactly in between X and B

1. If only statement I is sufficient
2. If both statement II and III are sufficient
3. If both statements I and III are sufficient
4. If all the three statements I, II & III are sufficient
5. If all statement I, II & III together are also not sufficient

Q 17. There are six people in a family, 2 couples and 2 children. How is Z related to M?

Statement I: Y is the only sister of A and A is married to C

Statement II: M is the only niece of C

Statement III: N is the cousin of M

1. If only statement III is sufficient
2. If both statements I and II are sufficient
3. If both statements I and III are sufficient
4. If all the three statements I, II & III are sufficient
5. If all statement I, II & III together are also not sufficient

Q 18. In which direction is Sumit when he reached the final destination?

Statement I: Sumit starts walking north from his house and then takes a right turn and Abhijeet joins him there

Statement II: Sumit’s school is 1km away from his house and is in the south-west direction from his house

1. Both statements I and II together are sufficient
2. Only statement I is sufficient
3. Only statement II is sufficient
4. Neither statement I nor II is sufficient
5. Either statement I or II is sufficient

Q 19. What will be the code for “pen”?

Statement I: “pen is of black colour” is coded as “es kj lk mn ok” and “black colour bird” is coded as “zx kj ok”

Statement II: “bird sings beautifully” is coded as “zx cv nb”

1. Both statements I and II together are sufficient
2. Only statement I is sufficient
3. Only statement II is sufficient
4. Neither statement I nor II is sufficient
5. Either statement I or II is sufficient

Q 20. 6 people are sitting in a straight line: O, M, G, J, X and Y. Who is sitting second to the right of J?

Statement I: M is sitting at the right end of the line and G is to the immediate left of M. X is sitting third from the left end of the line and to the immediate left of J

Statement II: Y is sitting at the left end of the line and J is second to its right. G is on the immediate right of J and M is on the other end of the line

1. Both statements I and II together are sufficient
2. Only statement I is sufficient
3. Only statement II is sufficient
4. Neither statement I nor II is sufficient
5. Either statement I or II is sufficient

Candidates can check the answers to the above-mentioned data sufficiency questions in the PDF given below:

20 Data Sufficiency Questions and Answers PDF:-Download PDF Here

Practising these questions as much as possible will ensure that a candidate has command over the topic and also, will be able to analyse that different topics like seating arrangement, blood relations, directions, puzzles, etc. are used to constitute a data sufficiency question.

For any further details, information, study material or exam information, candidates can visit BYJU’S.