Question

A, B, C, D, E and F, not necessarily in that order, are sitting at a round table. A is between D and F, C is opposite to D and D and E are not
on neighbouring chairs. Which one of the following pairs must be sitting on neighbouring chairs?
(A) A and B
(B) Cand E
(C) B and F
(D) A and C​

Answer 1

Answer:-

Given:

6 members - A , B , C , D , E & F are sitting at a round table.

And,

Case - 1: A is between D & F

Name any of the place around the table as A.

Now , Name the two neighbouring places of A as D & F.

Case - 2: C is Opposite to D

Name the place which is opposite to D as C.

Case - 3: D & E are not neighbors.

We have to places left (B , E) and E wont be beside D.

So, The neighbor of D must be B.

Hence, the correct seating arrangement (clockwise direction) will be A , F , C , E , B , D.

Now,

On checking the options ;

We can conclude that C , E are sitting in neighbouring chairs.

Hence, the correct answer will be Option - B.

Answer 2

Answer:

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⠀⠀⠀⠀$\rule{150}{2}$

⇒ A is between D and F

⠀

Put D and F at any two points with one gap in between for A. Now Three Places are Occupied.

⠀⠀⠀⠀$\rule{150}{1.2}$

⇒ C is opposite to D

⠀

C will sit on exact opposite of D. Now Two Places are Left.

⠀⠀⠀⠀$\rule{150}{1.2}$

⇒ D and E are not on neighbouring chairs

⠀

E can't sit nearby D, Hence it will sit beside C. And at the Left Place B will sit.