Choose the word which is different from the rest.

All except Korea are European countries, while Korea is an Asian country.

Hyena is the only flesh-eating animal in the group.

All others are parts of a tree.

All except Chess are outdoor games.

All except Geography are branches of Science.

All except Cot are parts of bed-spread.

All except Kidnap are actions of killing.

All except Drone are females.

Number of cuts made to cut a roll into 10 pieces = 9.

Therefore Required number of rolls = (45 x 24)/9 = 120.

Since each pole at the corner of the plot is common to its two sides, so we have :

Total number of poles needed = 27 x 4 - 4 = 108 - 4 = 104.