Logical Reasoning - Statement and Assumption - Discussion

In each question below is given a statement followed by two assumptions numbered I and II. You have to consider the statement and the following assumptions and decide which of the assumptions is implicit in the statement.

Give answer

  • (A) If only assumption I is implicit
  • (B) If only assumption II is implicit
  • (C) If either I or II is implicit
  • (D) If neither I nor II is implicit
  • (E) If both I and II are implicit.


Statement: There is no reason to rule out the possibility of life on Mars. Therefore the exploration of that planet has to be undertaken.


  1. There is life on Mars.
  2. The search for life is the sufficient reason for space exploration.

[A]. Only assumption I is implicit
[B]. Only assumption II is implicit
[C]. Either I or II is implicit
[D]. Neither I nor II is implicit
[E]. Both I and II are implicit

Answer: Option E


According to the statement, the possibility of life on Mars cannot be ruled out. So, I is implicit. Also, the statement mentions that the planet should be explored to probe for any life present. So, II is also implicit.

Ashish Trivedi said: (Nov 16, 2013)  
There is no reason to rule out the possibility of life on mars, but there is also no true evidence of life on mars as well. So how can we surely say that life does exist?thus, how can I be implicit?

I mean. They are searching for evidence, they actually have not got it yet.

Roshnie Sen said: (Jul 25, 2014)  
The first statement says that there is no reason to rule out the "possibility of life" on Mars. And assumption I says it with conviction that there is life on Mars. Both are contradictory. So I am doubtful about assumption I being implicit.

Priyanka said: (Aug 14, 2015)  
Life may be present on mars, but not necessarily exist because no prove has yet been found.

Ajith said: (Jan 17, 2016)  
Yes "I" can't be implicit.

Akshay said: (Aug 28, 2016)  
Yes, there is no certainity of life present on mars, therefore conclusion 1 can't be implict.

Ayush said: (Nov 8, 2021)  
Life is present in MARS, that's the reason why the author is trying to say the space exploration is to be continued and if the life was not present then the statement would have been of no need.

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