The knight who is left is in seat number 2k + 1.
Example: If we have 13 knights, then we have 13 = 2^3 + 5
(13-8=5)
The knight who is left is number 2 x 5 + 1 = 11
Therefore you should choose the 11th seat round the table. Draw the
table with 13 seats and work your way round and round and see that
the person in seat number 11 will be the survivor.
Example: If we have 13 knights, then we have 13 = 2^3 + 5
(13-8=5)
The knight who is left is number 2 x 5 + 1 = 11
Therefore you should choose the 11th seat round the table. Draw the
table with 13 seats and work your way round and round and see that
the person in seat number 11 will be the survivor.