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Reasoning practice

Data Sufficiency Questions with Answers

Judging whether the statements are enough to answer, without wasting time actually answering. This page pools every data sufficiency question on the site (201 of them, from 40 exams, weighted towards Banking, Management, Civil Services) so you can drill the topic on its own instead of meeting four of them inside a full paper.

41% of the pool is graded hard on this site’s own scale and 2% easy, which is harder than the average topic in this section.

Questions
201
Practice set
25 in 25 min
Difficulty
4/115/82
Negative marking
None
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Data Sufficiency questions with solutions

6 from the 201-question pool, worked in full.

  1. 1. What is the value of y? Statement I: y/4 = 9. Statement II: y is an even number.

    • A. Statement I alone is sufficient, but Statement II alone is not sufficient ✓
    • B. Statement II alone is sufficient, but Statement I alone is not sufficient
    • C. Both statements together are sufficient, but neither alone is sufficient
    • D. Neither statement is sufficient, even when combined

    Solution. Statement I alone gives y = 36 directly (sufficient). Statement II alone only says y is even, which does not fix a unique value (not sufficient).

  2. 2. What is the length of a wire? Statement I: Its resistance is 8 ohms. Statement II: Its resistance per metre is 2 ohms/m.

    • A. Statement I alone is sufficient
    • B. Statement II alone is sufficient
    • C. Both statements together are needed ✓
    • D. Neither statement is sufficient

    Solution. Statement I alone gives only total resistance, and Statement II alone gives only resistance per metre; both are needed together to compute length = total resistance / resistance per metre = 8/2 = 4 metres.

  3. 3. Is X an even number? Statement I: X is divisible by 4. Statement II: X is divisible by 6.

    • A. Statement I alone is sufficient, but Statement II alone is not sufficient
    • B. Statement II alone is sufficient, but Statement I alone is not sufficient
    • C. Both statements I and II together are sufficient, but neither alone is sufficient
    • D. Either statement I or II alone is sufficient ✓

    Solution. Any number divisible by 4 is even, and any number divisible by 6 is also even. So either statement alone is sufficient to conclude X is even.

  4. 4. What is the value of integer m? Statement I: m is a factor of 24. Statement II: m is a factor of 18. Which statement(s) are sufficient?

    • A. Statement I alone is sufficient
    • B. Statement II alone is sufficient
    • C. Both statements together are sufficient, but neither alone
    • D. Both statements together are still not sufficient ✓

    Solution. Even combined, the common factors of 24 and 18 are 1, 2, 3, and 6 — more than one possible value, so m cannot be uniquely determined.

  5. 5. Who is taller, P or Q? Statement I: P is taller than R. Statement II: Q is shorter than R.

    • A. Statement I alone is sufficient
    • B. Statement II alone is sufficient
    • C. Both statements together are sufficient, but neither alone ✓
    • D. Both statements together are still not sufficient

    Solution. Neither statement alone compares P and Q directly. Combined, P > R and Q < R together give P > R > Q, so P is definitely taller than Q — sufficient only when both are used together.

  6. 6. What is the sum insured under a certain policy? Statement I: The annual premium is ₹12,000. Statement II: The premium rate is 2% of the sum insured.

    • A. Statement I alone is sufficient, but Statement II alone is not sufficient
    • B. Statement II alone is sufficient, but Statement I alone is not sufficient
    • C. Either statement I or II alone is sufficient
    • D. Both statements I and II together are sufficient, but neither alone is sufficient ✓

    Solution. Statement I alone gives only the premium amount. Statement II alone gives only the rate. Together: sum insured = 12000 / 0.02 = ₹6,00,000.

Exams that set Data Sufficiency

12 categories, led by Banking, Management, Civil Services.

Also set by KVS PRT, LIC AAO, MAH MBA CET, MAH MCA CET, MAT, MICAT, MPPSC SSE, NABARD Grade A, NCHM JEE, NIACL AO, NIFT, NVS TGT, OPSC OCS, RBI Assistant, RBI Grade B, RRB NTPC, SBI Clerk, SBI PO, SEBI Grade A, SIDBI Grade A & B, SLAT, SNAP, SSC CGL, SSC CHSL, TANCET MBA, UPPSC PCS, UPSC CSE, VITEEE. Browse all exams.

Data Sufficiency: frequently asked questions

How many data sufficiency questions are there?

201, from the 40 exams here whose syllabus sets the topic. 2% are graded easy and 41% hard, which makes data sufficiency one of the harder topics in this section, against a 17% average.

Which exams ask data sufficiency questions?

40 of the exams on this site, weighted towards Banking (14), Management (7), Civil Services (4). Every question in this pool comes from one of their own mock tests, so the list below is the honest answer to whether the topic is worth your time.

Is data sufficiency hard?

41% of these 201 questions are graded hard and 2% easy, making it one of the harder topics in this section, against a 17% average.

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