Toss It Til You're Convinced!

Probability Level 3

You have an unfair coin. The probability it will land on heads is 23 \dfrac23.

The expected value for the number of coin flips it will take to get 3 heads in a row can be expressed as ab \dfrac ab, where aa and bb are coprime positive integers, find a+ba+b.

What is a+ba+b?

Other Expected Value Quizzes


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