Logical ReasoningData Sufficiencymixed

Data Sufficiency Quiz

Practice quiz on Data Sufficiency (Reasoning). 10 exam-style questions with explanations.

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About This Quiz

Practice quiz on Data Sufficiency (Reasoning). 10 exam-style questions with explanations. Data Sufficiency Quiz is a free, 10-minute, 10-mark practice quiz on AajExam rated at mixed difficulty, designed to help candidates preparing for SSC, UPSC, Banking, Railway and State PSC government competitive exams sharpen their command of Data Sufficiency (Logical Reasoning). Every question on this quiz ships with a detailed step-by-step solution so you don't just learn the right answer — you learn the reasoning and shortcuts top scorers use to crack similar questions faster on the actual exam day. Why Data Sufficiency Quiz matters in your preparation: government exam-conducting bodies repeatedly draw questions from the same chapters and the same skill-clusters across recruitment cycles. By attempting focused topic-wise quizzes like this one, you build pattern recognition — the ability to spot which formula, rule or trick applies the moment you see a question. Toppers consistently report that 5-10 quizzes on a single topic delivers more exam-day score gain than 20+ unfocused full-length mocks, because targeted drilling exposes your specific sub-topic weaknesses with surgical precision. How to use this quiz effectively: attempt it in one sitting under the 10-minute timer, without referring to notes or external resources — simulate exam-day conditions exactly. After submission, review the auto-generated analytics to see your accuracy, time per question and section-wise performance. Then go through every wrong and skipped question with the explanation, mentally tagging the underlying concept rather than just memorising the answer. Revisit this quiz after 7-10 days; your second attempt should be 15-20% faster with noticeably better accuracy. After mastering this quiz, explore the 6 related quizzes linked below to broaden your topic coverage. AajExam quiz design principles: every quiz on the platform is curated by subject experts using the actual question formats, difficulty distributions and time pressures of the target government exams. We deliberately avoid generic "textbook" questions in favour of exam-replicating ones. Solutions are written in plain English (and Hindi where source material was bilingual), with step-by-step working for quantitative problems, grammar rules for English questions, and direct reference statements for general awareness items. Performance analytics after each attempt include accuracy, attempt rate, time spent per question, and an estimated all-India percentile so you know exactly where you stand against other candidates. This quiz is completely free to attempt. You only need a free AajExam account to track your performance across attempts, view detailed solutions and unlock the platform-wide analytics dashboard. The platform is mobile-friendly and works seamlessly on smartphones, tablets and desktops — so you can sharpen your Data Sufficiency (Logical Reasoning) skills in any spare 15-minute window.

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Data Sufficiency Quiz — Questions with Solutions

All 10 questions from this quiz with the correct answer and explanation. Attempt them yourself first, then open each solution to check your reasoning.

Q1.What is the value of x? (I) x + 2 = 5 (II) y = 3. Which statement(s) is sufficient?
- A.I alone
- B.II alone
- C.Both together
- D.Neither
Show answer
Answer: A. I alone
I gives x = 3.
Q2.Is a number even? (I) It is divisible by 4 (II) It is prime. Which alone is sufficient?
- A.I alone
- B.II alone
- C.Either alone
- D.Neither
Show answer
Answer: A. I alone
A multiple of 4 is even.
Q3.Find the age of A. (I) A is 5 years older than B (II) B is 10. Sufficient together?
- A.Both together
- B.I alone
- C.II alone
- D.Neither
Show answer
Answer: A. Both together
A = 15 with both.
Q4.Is x > 5? (I) x = 7 (II) x < 10
- A.I alone
- B.II alone
- C.Both together needed
- D.Neither
Show answer
Answer: A. I alone
x = 7 > 5.
Q5.What is the area of a rectangle? (I) Length = 8 (II) Breadth = 5
- A.Both together
- B.I alone
- C.II alone
- D.Neither
Show answer
Answer: A. Both together
Both are needed.
Q6.Find the speed. (I) Distance = 100 km (II) Time = 2 h. Which is sufficient?
- A.Both together
- B.I alone
- C.II alone
- D.Neither
Show answer
Answer: A. Both together
Speed = distance/time.
Q7.Is a triangle right-angled? (I) Sides are 3, 4, 5 (II) It is scalene
- A.I alone
- B.II alone
- C.Both
- D.Neither
Show answer
Answer: A. I alone
3-4-5 is right-angled.
Q8.How many students are in a class? (I) 40% are girls (II) 24 are boys
- A.Both together
- B.I alone
- C.II alone
- D.Neither
Show answer
Answer: A. Both together
Boys are 60%, so total 40.
Q9.Is P the father of Q? (I) Q is the son of P (II) P is male
- A.I alone
- B.II alone
- C.Both
- D.Neither
Show answer
Answer: A. I alone
Son of P means P is a parent; combined with male gives father. Both needed.
Q10.What is x? (I) 2x = 8 (II) x is positive
- A.I alone
- B.II alone
- C.Both
- D.Neither
Show answer
Answer: A. I alone
x = 4.

Frequently Asked Questions

Is Data Sufficiency Quiz free to attempt on AajExam?

Yes. Data Sufficiency Quiz is completely free. You only need a free AajExam account to track your score, view detailed solutions and unlock cross-attempt analytics.

How long does it take to complete Data Sufficiency Quiz?

Data Sufficiency Quiz runs on a 10-minute timer in real exam-style conditions. The clock starts the moment you click Start, mirroring the time pressure of the actual exam.

Are detailed solutions provided?

Yes. Every question on Data Sufficiency Quiz ships with a complete step-by-step solution, the underlying concept, and (where applicable) shortcut tricks. You can also discuss any question with the AajExam community.

Can I attempt Data Sufficiency Quiz multiple times?

Yes. You can attempt this quiz as many times as you like. Each attempt is recorded separately so you can track improvement in score, accuracy and time-management.

Which government exams does this quiz prepare me for?

Data Sufficiency questions appear regularly in SSC CGL, CHSL, MTS, GD; IBPS PO, Clerk; SBI PO, Clerk; RRB NTPC, Group D; UPSC prelims and most State PSC exams. The specific weightage varies by exam — check the exam pattern on the corresponding AajExam exam page for details.