A drag racer has two parachutes, a main and a backup, that are designed to bring the vehicle to a stop after the end of a run. Suppose that the main chute deploys with probability 0.99, and that if the main fails to deploy, the backup deploys with probability 0.98. \begin{itemize} \item [a.] What is the probability that one of the two parachutes deploys? %% \item [b.] What is the probability that the backup parachutes deploys?| %% /o/o

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