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Hatshy [7]
3 years ago
10

Find the probability of getting exactly three tails when four coins are tossed.

Mathematics
2 answers:
pashok25 [27]3 years ago
4 0
75% or three fourths <span />
Marat540 [252]3 years ago
4 0
So we know that at least 3 heads means 3 or 4 heads 

<span>(3 heads)=1/2*1/2*1/2*1/2*4C3=4*1/16=4/16 </span>
<span>(4 heads)=1/16 </span>

<span>4/16+1/16=5/16

So the answer would be 5/16</span>
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----------------------------------------------------------

Work Shown:

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