Logical Reasoning - Statement and Conclusion
- Option : C
- Explanation : The condition of three terms is satisfied. No alignment is required.
A + A = A, conclusion is ‘All books are papers’. The immediate inference of the conclusion is ‘Some papers are books’. So conclusion I follows.
The immediate inference of second statement is ‘some papers are stones’; that is also conclusion 2. So, option (c) is the answer.
Venn diagram solution:
- Option : C
- Explanation : This is a comprehensive question, covering all
major aspects of syllogism. Please look at the solution
carefully.
We need to bring the statements to their logical form before checking them for alignment.
All those eligible for the post are graduates. Some rickshaw pullers are graduates.
There are three terms—eligible, graduates, and rickshaw pullers. ‘Graduates’ is the common term.
The statements are not in the form: A to B and A to B. According to IEA, second statement should be given priority for conversion:
‘Some graduates are rickshaw pullers’.
Now the statements are to be brought to A to B and B to C form.
‘All those eligible for the post are graduates’ (A type)
‘Some graduates are rickshaw pullers’ (I type)
A + I = No conclusion.
- Option : D
- Explanation : There are three terms—grapes, oranges, and
apples.
A + O = No conclusion.
We do not get any conclusion through immediate inference (conversion) also. So, option (d) is the answer.
- Option : A
- Explanation : A + A = A, so conclusion I follows.
In conclusion II, the term ‘hardly working’ is not mentioned in the statements. So it does not need any consideration.
- Option : A
- Explanation : Since, both the premises are affirmative, the conclusion must be affirmative, conclusion II cannot follow.
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