Answer:
20
Step-by-step explanation:
Two possible results A and B
If the result for the first step was "A", then there would be 4 possible results for the second step.
Let us say the 4 possible results are 1,2 ,3,4
So, Possible outcomes for this case = {A1,A2,A3,A4} =4
If the result for the first step was "B", then there would be 16 possible results for the second step.
Let us say the 16 possible results are 1,2 ,3,4,....,16
So, Possible outcomes for this case = {B1,B2,B3,B4,....,B16} =16
So, Total possible outcomes = 16+4 = 20
Hence there are 20 possible outcomes for this experiment.
