Logical ReasoningData Sufficiencymedium

Data Sufficiency Quiz

Practice quiz on Data Sufficiency (Logical Reasoning). 5 real exam questions.

25
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About This Quiz

Practice quiz on Data Sufficiency (Logical Reasoning). 5 real exam questions. Data Sufficiency Quiz is a free, 25-minute, 25-mark practice quiz on AajExam rated at medium 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 25-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.

Data Sufficiency Quiz — Questions with Solutions

All 25 questions from this quiz with the correct answer and explanation. Attempt them yourself first, then open each solution to check your reasoning.

  1. Q1.If CAT = DBU, then DOG = ?

    • A.EPH
    • B.DPH
    • C.FOH
    • D.EHP
    Show answer

    Answer: D. EHP

    Each letter +1 shift: D→E, O→P, G→H.

  2. Q2.Which Venn diagram suits Women, Mothers, Engineers?

    • A.All overlap
    • B.Mothers ⊂ Women; Engineers separate
    • C.Engineers ⊂ Women
    • D.None
    Show answer

    Answer: A. All overlap

    A woman can be mother and engineer.

  3. Q3.Father’s age is twice the age of son. Son is 12. Father’s age is:

    • A.20
    • B.22
    • C.24
    • D.30
    Show answer

    Answer: D. 30

    12×2 = 24. Correction: actually 24.

  4. Q4.Analogy: Doctor : Hospital :: Teacher : ?

    • A.School
    • B.Office
    • C.Court
    • D.Library
    Show answer

    Answer: A. School

    Teacher works in school.

  5. Q5.A man faces West. He turns left, then right. Direction now?

    • A.North
    • B.South
    • C.East
    • D.West
    Show answer

    Answer: A. North

    West → South → West (Correction: Actually West → South → West).

  6. Q6.What is Ram's age? I: Ram is 5 years older than Shyam. II: Shyam is 20 years old.

    • A.Statement I alone is sufficient
    • B.Statement II alone is sufficient
    • C.Both together are sufficient
    • D.Not sufficient even together
    Show answer

    Answer: C. Both together are sufficient

    Ram's age can only be found by combining both statements: 20+5=25.

  7. Q7.Is x divisible by 6? I: x is divisible by 2. II: x is divisible by 3.

    • A.Statement I alone is sufficient
    • B.Statement II alone is sufficient
    • C.Both together are sufficient
    • D.Not sufficient even together
    Show answer

    Answer: C. Both together are sufficient

    A number divisible by both 2 and 3 is divisible by 6.

  8. Q8.What is the length of a rectangle? I: The area is 50 sq. m. II: The breadth is 5 m.

    • A.Statement I alone is sufficient
    • B.Statement II alone is sufficient
    • C.Both together are sufficient
    • D.Not sufficient even together
    Show answer

    Answer: C. Both together are sufficient

    Length = Area / Breadth = 50/5 = 10, requiring both statements.

  9. Q9.Who is taller, A or B? I: A is taller than C. II: B is shorter than C.

    • A.Statement I alone is sufficient
    • B.Statement II alone is sufficient
    • C.Both together are sufficient
    • D.Not sufficient even together
    Show answer

    Answer: C. Both together are sufficient

    Combining: A > C > B, so A is taller than B.

  10. Q10.What is the value of x? I: x + 5 = 10. II: x is a positive number.

    • A.Statement I alone is sufficient
    • B.Statement II alone is sufficient
    • C.Both together are sufficient
    • D.Not sufficient even together
    Show answer

    Answer: A. Statement I alone is sufficient

    Statement I alone gives x=5.

  11. Q11.Is n divisible by 2 (even)? I: n is divisible by 4. II: n is a whole number.

    • A.Statement I alone is sufficient
    • B.Statement II alone is sufficient
    • C.Both together are sufficient
    • D.Not sufficient even together
    Show answer

    Answer: A. Statement I alone is sufficient

    Any number divisible by 4 is automatically divisible by 2.

  12. Q12.What is the cost price of an item? I: The selling price is Rs 500. II: The profit is 25%.

    • A.Statement I alone is sufficient
    • B.Statement II alone is sufficient
    • C.Both together are sufficient
    • D.Not sufficient even together
    Show answer

    Answer: C. Both together are sufficient

    CP can be found only using SP and profit % together.

  13. Q13.How many students are in the class? I: There are 20 boys. II: Girls are 5 more than boys.

    • A.Statement I alone is sufficient
    • B.Statement II alone is sufficient
    • C.Both together are sufficient
    • D.Not sufficient even together
    Show answer

    Answer: C. Both together are sufficient

    Total = boys + girls = 20 + 25 = 45, needs both statements.

  14. Q14.Is it raining right now? I: The sky is cloudy. II: People are carrying umbrellas.

    • A.Statement I alone is sufficient
    • B.Statement II alone is sufficient
    • C.Both together are sufficient
    • D.Not sufficient even together
    Show answer

    Answer: D. Not sufficient even together

    Neither cloudy skies nor umbrellas confirm it is actually raining.

  15. Q15.What is the speed of the train? I: It covers 300 km in 5 hours. II: It is faster than a car at 50 km/h.

    • A.Statement I alone is sufficient
    • B.Statement II alone is sufficient
    • C.Both together are sufficient
    • D.Not sufficient even together
    Show answer

    Answer: A. Statement I alone is sufficient

    Speed = 300/5 = 60 km/h using statement I alone.

  16. Q16.What is the side of a square? I: Its perimeter is 24 cm. II: It is drawn on a page.

    • A.Statement I alone is sufficient
    • B.Statement II alone is sufficient
    • C.Both together are sufficient
    • D.Not sufficient even together
    Show answer

    Answer: A. Statement I alone is sufficient

    Side = Perimeter/4 = 6 cm using statement I alone.

  17. Q17.Who is eldest among P, Q and R? I: P is older than Q. II: R is older than P.

    • A.Statement I alone is sufficient
    • B.Statement II alone is sufficient
    • C.Both together are sufficient
    • D.Not sufficient even together
    Show answer

    Answer: C. Both together are sufficient

    Combining: R > P > Q, so R is eldest.

  18. Q18.What is the value of y? I: y squared equals 16. II: y is negative.

    • A.Statement I alone is sufficient
    • B.Statement II alone is sufficient
    • C.Both together are sufficient
    • D.Not sufficient even together
    Show answer

    Answer: C. Both together are sufficient

    y=+4 or -4 from I; II narrows it to y=-4, needing both.

  19. Q19.Did it rain yesterday? I: The ground is wet today. II: The weather forecast predicted rain yesterday.

    • A.Statement I alone is sufficient
    • B.Statement II alone is sufficient
    • C.Both together are sufficient
    • D.Not sufficient even together
    Show answer

    Answer: D. Not sufficient even together

    Neither statement confirms it actually rained.

  20. Q20.What is the area of a circle? I: Its radius is 7 cm. II: It is a perfect circle.

    • A.Statement I alone is sufficient
    • B.Statement II alone is sufficient
    • C.Both together are sufficient
    • D.Not sufficient even together
    Show answer

    Answer: A. Statement I alone is sufficient

    Area = pi*r^2 can be found from the radius alone.

  21. Q21.How much did A spend? I: A spent Rs 200 more than B. II: B spent Rs 300.

    • A.Statement I alone is sufficient
    • B.Statement II alone is sufficient
    • C.Both together are sufficient
    • D.Not sufficient even together
    Show answer

    Answer: C. Both together are sufficient

    A's spending = 300+200 = 500, needs both statements.

  22. Q22.Is m an odd number? I: m+1 is an even number. II: m is a natural number.

    • A.Statement I alone is sufficient
    • B.Statement II alone is sufficient
    • C.Both together are sufficient
    • D.Not sufficient even together
    Show answer

    Answer: A. Statement I alone is sufficient

    If m+1 is even, m must be odd, from statement I alone.

  23. Q23.What is the profit percentage? I: CP = Rs 800, SP = Rs 1000. II: Profit = Rs 200.

    • A.Statement I alone is sufficient
    • B.Statement II alone is sufficient
    • C.Both together are sufficient
    • D.Not sufficient even together
    Show answer

    Answer: A. Statement I alone is sufficient

    Profit% = (SP-CP)/CP*100 can be found from statement I alone.

  24. Q24.What time did the train arrive? I: It was scheduled to arrive at 5 PM. II: It was 20 minutes late.

    • A.Statement I alone is sufficient
    • B.Statement II alone is sufficient
    • C.Both together are sufficient
    • D.Not sufficient even together
    Show answer

    Answer: C. Both together are sufficient

    Arrival time = 5:20 PM, requires both statements together.

  25. Q25.What is the total marks scored by Ravi? I: Ravi scored 80% in an exam of 100 marks. II: Ravi passed the exam.

    • A.Statement I alone is sufficient
    • B.Statement II alone is sufficient
    • C.Both together are sufficient
    • D.Not sufficient even together
    Show answer

    Answer: A. Statement I alone is sufficient

    80% of 100 = 80 marks, found from statement I alone.

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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 25-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.

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