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. All stars are white.
II. All white are moon.
III. No moon is blue.

Conclusions:

I. Some moon are stars.
II. No blue is stars.
III. Some white are stars.
IV. Some blue are white.

Solution

The venn diagram for above statements is :

I. Some moon are stars = true

II. No blue is stars = true

III. Some white are stars = true

IV. Some blue are white. = false

Thus, only conclusion (I), (II) and (III) follows.

=> Ans - (B)

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