Tuesday, December 8, 2015

3

  1. Statements: All marks are grades. No grade is a score. All letters are scores. All scores are characters.
    Conclusions: 
    I. Some characters are grades.
    II. Some letters are marks is a possibility.
    III. Some grades are not characters.
    A) Only I and III follow.
    B) Only II and III follows
    C) Only I follows
    D) None follows.
    Answer & Explanation
    D) None follows.
    Explanation: 

    I is not definite
    II – if any letter is marks, then some scores will be grades which is not possible as shown belowSylog-12-1
    III – does not follow because all grades are characters is a possibility.
  2. Statements: Some numbers are digits. All digits are alphabets. No alphabet is a vowel. All consonants are vowels.
    Conclusions: 
    I. All numbers are consonants is a possibility.
    II. No consonant is digit.
    III. No alphabet is number
    A) Only II and III follow
    B) Only I and II follow
    C) Only II follow.
    D) All follow.
    Answer & Explanation
    C) Only II follow.
    Explanation: 

    I – if all numbers are consonants, then some vowels will be alphabets which is not possible.
    II – is true because if any consonant is digit, then some vowels will be alphabets which is not possible.
    III – is false, because, some alphabets are definitely numbers asSylog-12-2
  3. Statements: Some benches are walls. All walls are houses. Some houses are jungles. All jungles are roads.
    Conclusions: 
    I. Some walls are roads
    II. Some jungles are not benches
    III. All jungles being walls is a possibility.
    A) Only III follow
    B) Only I and II follow
    C) Only either I or II and III follow
    D) None follows.
    Answer & Explanation
    A) Only III follow
    Explanation: 

    I is not definite
    II – does not follow because all jungles are benches is a possibility asSylog-12-3
    III is a possibility.
  4. Statements: All bricks are flowers. Some houses are flowers. All pens are houses. No pot is house
    Conclusions: 
    I. No pot is pen
    II. Some pens are flowers.
    III. All pots are flowers is a possibility.
    A) All follows
    B) Only I and III follow
    C) Only II and III follow.
    D) None follows
    Answer & Explanation
    B) Only I and III follow
    Explanation: 

    I is definite.
    II is not definite asSylog-12-4
    III is a possibility.
  5. Statements: All lions are ducks. No duck is a horse. All horses are fruits. Some horses are tanks.
    Conclusions: 
    I. All ducks being fruits is a possibility
    II. Some tanks are lions.
    III. No fruit is lion
    A) Only II and III follow.
    B) Only I and III follow
    C) All follows.
    D) Only I follow
    Answer & Explanation
    D) Only I follow
    Explanation: 

    I is a possibility asSylog-12-5
    II is not definite.
    III is not definite. In above venn lions are fruits is a possibility
  6. Statements: All apartments are huts. No hut is a building. All buildings are cottages. Some cottages are houses.
    Conclusions: 
    I. Some buildings are houses
    II. All apartments being cottages is a possibility.
    III. All houses are huts is a possibility.
    A) Only II follows.
    B) Only II and III follow
    C) All follows.
    D) Only I and III follow
    Answer & Explanation
    B) Only II and III follows
    Explanation: 

    I is not definite
    II is a possibility asSylog-12-6_1
    III is a possibility asSylog-12-6_2
  7. Statements: All letters are black. All black are blue. No blue is green. Some red are letters.
    Conclusions: 
    I. No letter is green
    II. Some red are blue
    III. Some black are red.
    A) Only II and III follow.
    B) Only I follow.
    C) All follows.
    D) Only I and III follow
    Answer & Explanation
    C) All follows.
    Explanation: 

    I is definite
    II and III are definite asSylog-12-7
    Shaded portion is all red, black and blue
  8. Statements: Some necklaces are bangles. All bangles are ornaments. Some ornaments are treasures. No flower is bangle
    Conclusions: 
    I. All flowers being ornaments is a possibility
    II. All necklaces being flowers is a possibility
    III. No bangle is treasure
    A) Only I follow.
    B) Only either I or II follows
    C) All follows.
    D) Only I and III follow
    Answer & Explanation
    A) Only I follow.
    Explanation: 

    I is a possibility
    II – not possible, because if all necklaces are flowers, then some bangles will be flowers which is not possible.
    III is not definite
  9. Statements: All beaks are trees. All trees are flowers. No tree is fruit. All bangles are flowers
    Conclusions: 
    I. Some bangles are beaks.
    II. All bangles are fruits.
    III. Some flowers are not fruits.
    A) Only I and III follow.
    B) Only III follows
    C) None follows.
    D) Only II and III follow
    Answer & Explanation
    B) Only III follows
    Explanation: 

    I and II are not definite.
    III – all flowers are fruits is not a possibility, so III follow
  10. Statements: Some trains are radios. Some radios are rackets. All rings are rackets. No radio is TV.
    Conclusions: 
    I. All trains are TV is a possibility.
    II. Some rings are radios.
    III. Some TV are not rackets.
    A) Only II and III follow.
    B) Only I follow.
    C) All follow.
    D) None follow
    Answer & Explanation
    D) None follow
    Explanation: 

    I is not true, because then some radios will be TV
    II is not definite
    III – all TV are rackets is a possibility, so does not follow.

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