Question: On average, a certain word processing software program has a fatal crash once in every 5 0 instances of saving a document. The instances of

On average, a certain word processing software program has a fatal crash once in every 50 instances of saving a document.
The instances of fatal crashes, while saving, are independent from one another.
Calculate the probability that the second fatal crash, while saving, occurs on the fourth instance of saving a document.

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