UPSC Prelims 2016·CSAT·Logical Reasoning·Deductive Logic

Consider the following statement: "We shall go either for a picnic or for trekking". Which of the following, if true, would falsify this claim?

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Last updated 23 May 2026, 3:31 pm IST
  1. AWe go for a picnic but not for trekking
  2. BActivities such as picnic and trekking are encouraged by the health authorities
  3. CWe go for trekking and not for picnic
  4. DWe do not go either for picnic or for trekkingCorrect

Explanation

The original statement "We shall go either for a picnic or for trekking" means that at least one of these activities will happen. It allows for going only for a picnic, only for trekking, or for both. To falsify this claim, the only scenario is if neither of the activities happens. Let's analyze the options: A) We go for a picnic but not for trekking: This scenario is consistent with the original claim (since we go for a picnic). It does not falsify it. B) Activities such as picnic and trekking are encouraged by the health authorities: This statement is irrelevant to whether "we" go for either activity. It does not falsify the claim. C) We go for trekking and not for picnic: This scenario is consistent with the original claim (since we go for trekking). It does not falsify it. D) We do not go either for picnic or for trekking: This means we neither go for a picnic nor for trekking. This directly contradicts the original claim that we will go for "either... or". Therefore, this statement falsifies the claim. The final answer is D.
Logical Reasoning: Consider the following statement: "We shall go either for a picnic or for trekking". Which of the following, if true, wo
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