Question

Six candidates A,B,C,D,E,F are posing for a photograph,not necessarily in the same order.
The following additional information is available about the seating arrangement.
(1) A is five places to the left of C.
(2)Exactly two pairs of candidates are adjacent to each other, as it appears in the list of english
alphabets, but not necessarily in the same order (Ex. AB or BA, CD or DC, etc)
(3)If you consider line of symmetry for the row in question, then Foccupies a position adjacent to this line.
If the relative position of A & C alone is fixed, but the condition on who is to whose left or right is waived &
and all other conditions are waived then in how many ways can the seating arrangement be effected
Select one:
O a. 24
O b. 12
O C. 48
O d. 6.​

Answer 1

Answer:

Using the first condition – There is one person between C and F, i.e. C _ F or F _ C. So, there are only two conditions.

Using the second condition – E is neither adjacent to A nor D, i.e. C E F or F E C.

Using the third condition F is opposite A and D is opposite to C, the six persons can occupy the positions only as given in the diagram below.

Logical Reasoning

It is clear from the diagram, that B is opposite to E.

Sequencing in a circle:

The arrangements we have considered so far are linear.

There are also arrangements in closed loops, called circular arrangemen