A box contains four (blue) balls Three red (R) balls. If one selects Two balls at random

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Question:

A box contains four (blue) balls Three red (R) balls. If one selects Two balls at random without replacement answer the following
a. Draw and label a tree diagram for this exprement. Be sure to include probabilities along each branch.
b. Find the probability of selecting two blue balls P(B and B)
c. Find the probability of selecting at least one red ball.
d. Does this experiment independent or dependent probability.