申論題

一、 Consider the seating arrangement of 5 boys A, B, C, D, and E, and 5 girls F, G, H, I, and J at a round table, where two seating arrangements are considered the same if one of them can be derived from the other by a rotation.

 (a)  What is the probability that boy A and girl F sit next to each other, while there are exactly 2 people sitting between boy B and girl G?