Six persons A, B, C, D, E and F are standing in a row. C and D are standing close to each other alongside E. B is standing beside A only. A is fourth from F. Who are standing on the extremes?  

(a) A and F (b) B and D (c) B and F (d) None of the above

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1 Answers

(c) C, D, E are together.

Also, A and B are together.

Possible arrangements,

B A  C D E  or  C D E  A B

Now, since A is fourth from F, 

F must lie on the extreme end. 

Thus, B and F are on the extreme positions. 

BACDEF or FCDEAB

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