Question 18

In each of the following question below are given some statements followed by some conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements.
Statements:

I. Some boys are hardworking.
II. No intelligent are boys.
Conclusions:

I. Some hardworking are not intelligent.
II. All hardworking are intelligent.
III. Some intelligent are not hardworking.

Solution

The venn diagram for above statements is :

Conclusions:
I. Some hardworking are not intelligent = True (Boys who are hard working cannot be intelligent)
II. All hardworking are intelligent = false(We can't conclude)
III. Some intelligent are not hardworking = false(We can't conclude)

Thus, only conclusion I follows.

=> Ans - (A)


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