Question : Directions: Two statements are given followed by two conclusions numbered I and II. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow (s) from the statements.
Statements:
Some cars are fast.
Some fast is slow.
Conclusions:
I. Some cars are not slow.
II. Some slow is fast.
Option 1: Both conclusions I and II follow
Option 2: Only conclusion II follows
Option 3: Neither conclusion I nor II follows
Option 4: Only conclusion I follows
Correct Answer: Only conclusion II follows
Solution : The possible Venn diagram according to the given statements is as follows –
Let's analyse the conclusions –
Conclusion (I):
Some cars are not slow – From the Venn diagram, it is evident that there is no direct relation between cars and slow. So, no definite relation can be drawn. Thus, this conclusion does not follow.
Conclusion (II):
Some slow is fast – From the Venn diagram, it is evident that the circles representing fast and slow overlap and have some parts of their area in common. Thus, it can be concluded that some slow is fast. Thus, this conclusion follows.
So, the only conclusion II follows. Hence, the second option is correct.
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