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Consider the number of blocks on the master file that are read before the first block is updated

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Consider the number of blocks on the master file that are read before the first block is updated. Each day, the transaction file is run against the master file and approximately 4% of master blocks are updated.

(a) What is the probability that more than 10 blocks will be read until the first block is found that must be updated?

(b) If 10 blocks were read without needing to be updated, what is the probability that the first update will occur in the 14th block?