Instructions

In each question below are given two/three statements followed by two conclusions numbered I and II. You have to take the given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements, disregarding commonly known facts. Give answer :
a: If only conclusion I follows.
b: If only conclusion II follows.
c: If either conclusion I or II follows.
d: If neither conclusion I nor II follows.
e: If both conclusions I and II follow.

Question 78

Statements :
All circles are a triangle.
Some triangles are rectangles.
All rectangles are squares.
Conclusions :
I. Some triangles are not rectangles.
II. No square is a circle.

Solution

It is given that some triangles are rectangles. It may happen that all rectangles are triangles. Hence, A is not necessarily true. Similarly, two is also not necessarily true. Hence, D is the correct answer.