Logical Reasoning - Statement and Assumption - Discussion

In each question below is given a statement followed by three assumptions numbered I, II and III. You have to consider the statement and the following assumptions, decide which of the assumptions is implicit in the statement and choose your answer accordingly.


Statement: "I want to present a book on techniques of yoga to Ajay on his birthday."- A tells B.


  1. A will be invited by Ajay on his birthday.
  2. The person, to whom the book is to be presented, is not keeping good health.
  3. Book is an acceptable gift for birthday.

[A]. Only I and II are implicit
[B]. Only II and III are implicit
[C]. Only I and III are implicit
[D]. None is implicit
[E]. All are implicit

Answer: Option C


Since A has decided to gift a book to Ajay on his birthday, it is quite evident that he will be invited by Ajay and that a book is an acceptable gift. So, both I and III are implicit. Nothing about the state of health of the person can be deduced from the statement. So, II is not implicit.

Vishal Desai said: (Jul 11, 2015)  
Why not E? Here we are taking about assumptions.

Nimit said: (Aug 17, 2015)  
Gift is something that is useful so he must be having health issues.

Kevin said: (Oct 27, 2019)  
I think the connection between the statement and each of the two conclusions I. And III. Is not exactly logical but more commonsensical. They can be drawn by inference. Inference is weaker than pure deductive logic.

Kevin said: (Oct 28, 2019)  
I think it is part of a test to be an employee and be hired. So if it is a statement by A, assume A is your boss or the owner of the company. Also assume A is honest and does not want to do anything that doesn't make good business sense. Then it is easier to conclude that I. And III. Are true. But II. Does not have to be true because yoga is a wonderful thing and there are many reasons besides ill health why a person might want to enjoy yoga (e.g. He will become better at playing football).

Imran Wahid said: (Sep 28, 2020)  
One doesn't need to be invited to present a gift to the birthday boy. In his physical absence, he can still deliver his gift via some other means. Am I right?

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