For each Bernoulli process, find the expected number of successes: 1. Number of trials = 10, Probability of success = 0.8. 2. Number of trials = 280, Probability of success = 1/10. 3. Number of trials = 31, Probability of success = :0.2. 4. Number of trials = 23, Probability of failure = 0.9. 5. Number of trials = 69, Probability of failure = 3/7.

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