in a room filled with 6 people , all 6 people have exactly 1 sibling in the room . if two individuals are selected from the room at random , what is the probability that those two individuals are not siblings ?
n0 = 6.0
n1 = 6.0
n2 = 1.0
t0 = n0 - 1.0
t1 = n0 * t0
t2 = t0 - 1.0
t3 = n0 * t2
answer = t3 / t1
print(answer)