Following are three sets of letters. Draw one letter from Set 1 and place it in Set 2. Then draw one

Question

letter from Set 2 and place it in Set 3. Finally, draw a letter from Set 3. What is the probability that
the last letter drawn is a B?
B C B B B B
Set 1 Set 2 Set 3

Answer 1

Assuming set 1 = BC, set 2 = BB and Set 3 = BB, from the data given, I would say the probability is 1.00.