What is the mean number of rolls until the next six

Reference no: EM131319650

Fred rolls an unbiased six-sided die once per second, noting the occasions when the outcome is a six.

(a) What is the mean number of rolls from one six to the next six?

(b) Between two rolls, the clock strikes one. What is the mean number of rolls until the next six?

Reference no: EM131319650

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