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Question 36
There are four envelopes — E1, E2, E3 and E4 — in which one was supposed to put letters L1, L2, L3 and L4 meant 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.
Solution
From the statements we need to infer which envelope contains L2.
From statement 1, we know that C2 should open E1.
From statement 2, we cannot tell which envelope contains L2.
Hence, the question can be answered using one of the statements alone and not the other.
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