# what is the probability that three quarters tossed in the air...

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• Dec 11th 2011, 09:23 AM
slapmaxwell1
what is the probability that three quarters tossed in the air...
ok so here we go...

what is the probability that three quarters tossed in the air will land with only one head facing up?

three coins with three sets of possibilities...

HTT THT TTH

with each set we have the result or ratio 1/2, 1/2, 1/2

so the probability is 1/8?
• Dec 11th 2011, 09:27 AM
slapmaxwell1
Re: what is the probability that three quarters tossed in the air...
Quote:

Originally Posted by slapmaxwell1
ok so here we go...

what is the probability that three quarters tossed in the air will land with only one head facing up?

three coins with three sets of possibilities...

HTT THT TTH

with each set we have the result or ratio 1/2, 1/2, 1/2

so the probability is 1/8?

ok i know this is wrong, im not sure where i messed up or why.....
• Dec 11th 2011, 09:35 AM
Plato
Re: what is the probability that three quarters tossed in the air...
Quote:

Originally Posted by slapmaxwell1
what is the probability that three quarters tossed in the air will land with only one head facing up?
three coins with three sets of possibilities...
HTT THT TTH CORRECT

There are eight possible outcomes:
$\begin{gathered} HHH \hfill \\ HHT \hfill \\ HTH \hfill \\ HTT \hfill \\ THH \hfill \\ THT \hfill \\ TTH \hfill \\ TTT \hfill \\ \end{gathered}$
How many are favorable?
• Dec 11th 2011, 09:36 AM
slapmaxwell1
Re: what is the probability that three quarters tossed in the air...
3
• Dec 11th 2011, 09:37 AM
Plato
Re: what is the probability that three quarters tossed in the air...
Quote:

Originally Posted by slapmaxwell1
3

So what is the probability?
• Dec 11th 2011, 09:37 AM
slapmaxwell1
Re: what is the probability that three quarters tossed in the air...
ok ok so the answer is 3/8! thanks it helps when i see the problem laid out like that.