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

Statements:

1.) All pens are frogs.

2.) Some crows are frogs.

Conclusions:

I. No pen is a crow.

II. Some pens are crows.

Question

Question

This question was previously asked in

SSC GD Previous Paper 15 (Held On: 18 Feb 2019 Shift 1)

Answer 1

The least possible Venn diagram is,

F9 Antesh 5-10-2020 Swati D4

Conclusion I: No pen is a crow → False (as shown in the diagram it is a possibility but not definite)

Conclusion II: Some pens are crows → False (as shown in the diagram it is a possibility but not definite)

The two conclusions form a complimentary pair.

Hence, either conclusion I or conclusion II follows.