Help with explanation

Suppose there was a group of ve balloons. Two balloons were chosen from the group (without replacement}. Use the diagram and denitions of events below to answer the following questions. Event R = A red balloon was selected Event B = A blue balloon was selected Event RR = A red balloon is selected first followed by another red balloon Event BB = A blue balloon is selected first followed by another blue balloon Event BR = A blue balloon is chosen first followed by a red balloon Event RB = A red balloon is selected first followed by a blue balloon Provide your answers as decimals. P(RB) : | ] P(B | R) = P(RR or BR) = l