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Home Logical Reasoning Logical Deduction See What Others Are Saying!
  • Question
  • Statements: All windows are doors. No door is wall.

    Conclusions:

    1. No window is wall.
    2. No wall is door.


  • Options
  • A. Only conclusion I follows
  • B. Only conclusion II follows
  • C. Either I or II follows
  • D. Neither I nor II follows
  • E. Both I and II follow

  • Correct Answer
  • Both I and II follow 

    Explanation
    Since both the premises are universal and one premise is negative, the conclusion must be universal negative. Also, the conclusion should not contain the middle term. So, I follows. However, II is the converse of the second premise and thus it also holds,

  • More questions

    • 1. Here are some words translated from an artificial language.
      tamceno means sky blue
      cenorax means blue cheese
      aplmitl means star bright
      Which word could mean "bright sky"?

    • Options
    • A. cenotam
    • B. mitltam
    • C. raxmitl
    • D. aplceno
    • Discuss
    • 2. Look carefully at the sequence of symbols to find the pattern. Select correct pattern:

    • Options
    • A. 1
    • B. 2
    • C. 3
    • D. 4
    • Discuss
    • 3. Statement: The end of a financial year is the ideal time to take a look at the performance of various companies.

      Assumptions:

      1. All the companies take such a review at the end of a financial year.
      2. The performance data of various companies is available.


    • Options
    • A. Only assumption I is implicit
    • B. Only assumption II is implicit
    • C. Either I or II is implicit
    • D. Neither I nor II is implicit
    • E. Both I and II are implicit
    • Discuss
    • 4. The Pacific yew is an evergreen tree that grows in the Pacific Northwest. The Pacific yew has a fleshy, poisonous fruit. Recently, taxol, a substance found in the bark of the Pacific yew, was discovered to be a promising new anticancer drug.

    • Options
    • A. Taxol is poisonous when taken by healthy people.
    • B. Taxol has cured people from various diseases.
    • C. People should not eat the fruit of the Pacific yew.
    • D. The Pacific yew was considered worthless until taxol was discovered.
    • Discuss
    • 5. Secretly is to openly as silently is to

    • Options
    • A. scarcely
    • B. impolitely
    • C. noisily
    • D. quietly
    • Discuss
    • 6. Statements: All trucks fly. Some scooters fly.

      Conclusions:

      1. All trucks are scooters.
      2. Some scooters do not fly.


    • Options
    • A. Only conclusion I follows
    • B. Only conclusion II follows
    • C. Either I or II follows
    • D. Neither I nor II follows
    • E. Both I and II follow
    • Discuss
    • 7. Statement: Nuclear power cannot make a country secure.

      Courses of Action:

      1. We must stop further expenses on increasing our nuclear power.
      2. We must destroy our nuclear capability.
      3. We must concentrate on improving our diplomatic relations.


    • Options
    • A. Only I follows
    • B. Only II follows
    • C. Only III follows
    • D. Only I and III follow
    • Discuss
    • 8. Statements: Prime age school-going children in urban India have now become avid as well as more regular viewers of television, even in households without a TV. As a result there has been an alarming decline in the extent of readership of newspapers.

      Conclusions:

      1. Method of increasing the readership of newspapers should be devised.
      2. A team of experts should be sent to other countries to study the impact of TV. on the readership of newspapers.


    • Options
    • A. Only conclusion I follows
    • B. Only conclusion II follows
    • C. Either I or II follows
    • D. Neither I nor II follows
    • E. Both I and II follow
    • Discuss
    • 9. Look at this series: 544, 509, 474, 439, ... What number should come next?

    • Options
    • A. 404
    • B. 414
    • C. 420
    • D. 445
    • Discuss
    • 10. 3 8 13 18 23 28 33

    • Options
    • A. 39 44
    • B. 38 44
    • C. 38 43
    • D. 37 42
    • E. 33 38
    • Discuss


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