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19 Jan 2018

PROBLEM 13: A fair coin is tossed until a total of two Tails land up, or until a total of three Heads land up, whichever comes first. Find the expected number of tails tossed. A) 4/3 B) 25/16 C) 1 D) 2 E) none of the above

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Elin Hessel
Elin HesselLv2
19 Jan 2018
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22. In an experiment, a coin is tossed until either the game side comes up twice in a row, or the coin has been tossed four times. How many outcomes are there? (a) 6 (b) 8 (c) 10 (d) 16 (e) this experiment never stops (f) none of the above

12. In an experiment a coin is tossed until either the same side comes up twice in a row, or the coin has been tossed four times. The outcome (H or T) of each toss is noted. How many outcomes are there for this experiment? (A) 6 (B) 8 (C) 10 (D) 16 (E) this experiment never stops (F) none of the above

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