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A head has probability t. What is P(first head on the 3rd toss)?
A(1-t) t^2
Bt cubed
C(1-t) cubed
D(1-t)^2 t
Answer & Solution
Correct answer: D. (1-t)^2 t
Two tails with probability (1-t) each must come first, followed by a head with probability t.
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