Six friends A, B, C, D, E and F are sitting on a bench facing north. A is sitting second to the right of C, who is an immediate neighbour of D. E is sitting to the immediate left of A. F is an immediate neighbour of both just D and B. If B is sitting at one extreme end of the bench, then who among the following is sitting at the other extreme end?

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  1. C
  2. E
  3. D
  4. A

Answer (Detailed Solution Below)

Option 4 : A
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Detailed Solution

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Given: Six friends A, B, C, D, E and F are sitting on a bench facing north.

(1): B is sitting at one extreme end of the bench. So, there have two possibilities

Case(I): 

F5 Savita Railways 5-8-22 D10

Case (II):

F5 Savita Railways 5-8-22 D11

(2): F is an immediate neighbour of both just D and B.

Case(I):

F5 Savita Railways 5-8-22 D12

Case (II):

F5 Savita Railways 5-8-22 D13

(3): A is sitting second to the right of C, who is an immediate neighbour of D. i.e. A is sitting second to the right of C and C is an immediate neighbour of D.

So, Case (II) is eliminated. 

Case (I):

F5 Savita Railways 5-8-22 D14

Then, the final arrangement is:

F5 Savita Railways 5-8-22 D15

Therefore, A is sitting at the other extreme end. 

Hence, the correct answer is A.

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