gs1easy

Examine the following statements :

  1. 1.All colours are pleasant.
  2. 2.Some colours are pleasant.
  3. 3.No colour is pleasant.
  4. 4.Some colours are not pleasant.

Given that the statement 4 is true, what can be definitely concluded?

  1. A.1 and 2 are true
  2. B.1 is false
  3. C.2 is false
  4. D.3 is true
▶ Answer & Explanation

Correct answer: B. 1 is false

If the statement 'Some colours are not pleasant' is true, it directly implies that the universal affirmative statement 'All colours are pleasant' must be false. This is because a universal affirmative requires every single instance to be pleasant, which is contradicted by even one instance of unpleasantness. The truth of statement 4 does not guarantee the truth or falsity of statements 2 or 3.

Source: UPSC gs1 2010

Practice this question with answer tracking

Track your performance, build spaced repetition reviews, and see your weak areas.

Start practising free →