Discussion

Question:

Direction: Each question is followed by two statements, I and II. Answer the questions based on the statements and mark the answer as
1. if the question can be answered with the help of any one statement alone but not by the other statement.
2. if the question can be answered with the help of either of the statements taken individually.
3. if the question can be answered with the help of both statements together.
4. if the question cannot be answered even with the help of both statements together.

There are four envelopes — E₁, E₂, E₃ and E₄— in which one was supposed to put letters L₁, L₂, L₃ and L₄meant for persons C₁, C₂, C₃ and C₄ respectively, but by mistake the letters got jumbled up and went in wrong envelopes. Now if C₂ is allowed to open an envelope at random, then how will he identify the envelope containing the letter for him?
I. L₂ has been put in E₁.
II. The letter belonging to C₃ has gone in the correct envelope.

Explanation:

The issue at hand is to make C₂ identify in which envelope is the letter L₂. The first statement actually tells him this. Hence, it alone is sufficient to answer the question. The second statement only implies that his letter would be in either E₁, E₂ or E₄ and hence is not sufficient to answer the question.

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