LR - Syllogisms - Previous Year CAT/MBA Questions
You can practice all previous year OMET questions from the topic LR - Syllogisms. This will help you understand the type of questions asked in OMET. It would be best if you clear your concepts before you practice previous year OMET questions.
In the following question, two statements are given followed by four conclusions. Taking the given statements to be true, decide which of the given conclusions logically follows from the given statements:
Some rivers are plateau.
No plateau is mountain.
- Some plateau are rivers.
- Some mountains are rivers.
- Some rivers are not mountains.
- All mountains are rivers.
Only I follows
Both II and III follow
Both I and III follow
Both I and II follow
Answer: Option C
Since Some rivers are plateau, it definitely follows that Some plateau are rivers. Hence, conclusion I follows. This eliminates option 2.
Now, No plateau is mountain. However, that does not mean that the sets of rivers and mountain have to intersect with each other. Hence, conclusions II and IV may or may not follow. This eliminates option 4.
Now, any river that is a plateau cannot be a mountain (as No plateau is mountain). Hence, there are definitely some rivers that are not mountains i.e. conclusion III follows.
Hence, option 3.
Choose the conclusion which logically follow from the given statement irrespective of commonly known facts.
All branches are flowers.
All flowers are leavesConclusion :
I. All branches are leaves
II. All leaves are branches
III. All flowers are branches
IV. Some leaves are branches
Only I and IV follow
Only II and III follow
Answer: Option B
Since all branches are flowers, and all flowers are leaves, it implies that all branches are leaves and some leaves are branches.
Hence, conclusions I and IV follow.
Hence, option 2.
From the given statements, choose the conclusions which follow logically:
i. Some iphones are mobiles
ii. Some mobiles are ipads
iii. Some ipads are tablets
I. Some tablets are iphones
II. Some mobiles are tablets
III. Some ipads are iphones
IV. All iphones are tablets
Only I & II follow
Only I, II & III follow
Only II & III follow
None of these
Answer: Option D
The statements i, ii and iii can be represented as shown above
From the figure, Set of iphones do not intersect with the set of ipads and the set of tablets, and the set of mobiles do not intersect with the set of tablets.
Consider the conclusions,
From the figure, first three conclusions are not true. In this set, the fourth conclusion cannot be concluded.
Hence, option 4.
All who studied commerce enjoy sports. No tax consultant enjoys sports. All those who enjoy sports love classical music.
If the above sentences are true, which of the following also must be true?
No one who enjoys classical music is a tax consultant by profession.
Every tax consultant enjoys classical music.
No tax consultant enjoys classical music.
No tax consultant studied commerce.
No one who studied commerce enjoy classical music.
Answer: Option D
All those who studied commerce are incorporated in the sports category and no tax consultant enjoys sports. Thus, no tax consultant studied commerce.
Hence, the correct answer is option 4.
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