Six persons A, B, C, D, E and F are sitting in two rows, three in each.
E is not at the end of any row.
D is second to the left of F.
C, the neighbour of E, is sitting diagonally opposite D.
B is the neighbour of F.

After interchanging seat with E, who will be the neighbours of D in the new position ?

A. C and A
B. F and B
C. Only B
D. Only A
E. Only C
Answer: A . C and A


The given information can be analysed as follows :
E is not at end. So, E must be in the middle of one of two rows.
D is second to the left of F. So, order of the row must be D -- F.
C is neighbour of E and is sitting diagonally opposite to D means C is under F in the other row
i.e. D __ F
__ E C
B is the neighbour of F.
So, the arrangement must be  D B F  &  A E C

Clearly, neighbours of E are A and C. So, on interchanging the seat with E, the new neighbours of D will be A and C.
So, the answer is (a).