Saturday, 24 March 2018

probability - Rolling a die until obtaining the face 6. Whats the expected amout of the sum?

A game where you roll a fair die, repeatedly, adding up the faces that show up, until the face 6 appears. What is the expected sum (including the 6)?


All I can think of is that the expected value of each roll is 7/2.

I'd appreciate your help!

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