\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
When playing with her bilboquet, Samira succeeds in landing the ball on the base with a probability of \(0.78\).
  1. What hypothesis must be made to model the repetition of 3 "throws" of the bilboquet as a Bernoulli scheme?
  2. Under this hypothesis, represent this Bernoulli scheme with a tree diagram.
  3. Calculate the probability that:
    1. she succeeds in landing the ball on the base exactly once.
    2. she succeeds in landing the ball on the base at least twice.

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