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What is the probability (in %) of throwing a 2-sided coin 3 times and NOT all of them have heads?

2007-02-14 15:00:08 · 10 answers · asked by cool nerd 4 in Entertainment & Music Polls & Surveys

10 answers

87.5%

2007-02-14 15:04:28 · answer #1 · answered by Andrew 6 · 1 0

1-(1/2)^3=7/8

There are only two possibilities each time a coin is tossed. And there is only one possible way to get all heads. 2 possibilities X 2 possibilities 2 possibilities=8 possible combinations.

2007-02-14 23:14:25 · answer #2 · answered by Anonymous · 0 0

33 1/3 i'm way off but o well

2007-02-14 23:04:04 · answer #3 · answered by Joe the God of Averageness® 4 · 0 0

TTT
THT
HHH
HHT
HTH
TTH
5/6 or 83.33%? I suck at probability so don't make fun of me too much. This does remind me I should be studying for that CFA exam.

2007-02-14 23:16:54 · answer #4 · answered by Anonymous · 0 0

50%

2007-02-14 23:02:52 · answer #5 · answered by ~ Just Me ~ 5 · 0 0

75%

2007-02-14 23:03:52 · answer #6 · answered by jj 2 · 0 0

Probability will always be 50% you ********.

2007-02-14 23:15:24 · answer #7 · answered by Anonymous · 0 1

I don't feel like trying to figure it out.

2007-02-14 23:02:56 · answer #8 · answered by bobcat70 2 · 0 1

i dont' know... and i'm not doing your math homework for you either...

2007-02-14 23:03:06 · answer #9 · answered by Anonymous · 2 1

umm i'm guessing 25%...........

2007-02-14 23:02:43 · answer #10 · answered by the idiot down the road 4 · 0 0

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