SSC GD 2019 PYQ — Question 83

SSC GD Constable (English) - 1 March 2019 Shift 1 • Reasoning • Q83

The statements below are followed by three conclusions labelled I, II and III. Assuming that the information in the statement is true, even if it appears to be at variance with generally established facts, decide which conclusion(s) logically and definitely follow(s) from the information given in the statements.
Statements:

All balls are boats.
All boats are cars.
Conclusions:
I. Some cars are balls.
II. All balls are cars.
III. All cars are balls.

Show answer & explanation

Correct answer: D

Explanation

The correct answer is option 4 i.e. Only conclusions I and II follow.

Understanding

The least possible Venn diagram is shown below:

Conclusions:

I. Some cars are balls: True (as all balls are boats and all boats are cars then some cars are definitely balls)

II. All balls are cars: True (as all balls are boats and all boats are cars this implies all balls are cars) 

III. All cars are balls: False (as all balls are boats and all boats are cars then some cars are balls but we don't know about the remaining part of cars so, it is false)