Answer:
Too fast for me.
Step-by-step explanation:
The 1st layer has 1 cubes, which is also 1²,
the 2nd layer has 4 cubes, which is 2²
the 3rd layer has 9, which is 3²
the nth layer has n² cubes
P(AA)=1/9
P(BB)=1/9
P(AA) or P(BB)=1/9+1/9=2/9=0.22
It is 100 ..........................................................