We toss three coins. What is the probability of the event "3 heads appear"?
Answer
1/4
3/8
1/8
1/2
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OpenStudy (gorv):
well watzz ur say ..how many time 3 head can appear??
OpenStudy (surryyy):
the answer is 1/8?
OpenStudy (gorv):
yeah thatzz right ,,but how u got ??
OpenStudy (gorv):
@surryyy
OpenStudy (gorv):
tell me i know how bt just wanted to chck that u did right
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OpenStudy (mayankdevnani):
When we toss 1 coin,the maximum probabilty we can get is 1 i.e head or tail.
but there are total 2 outcomes.
so probability :-
\[\large \bf probability=\frac{no.of~favourable~conditions}{No.of~outcomes}=\frac{1}{2}\]
but we tossed three times,so
\[\large \bf probability=\frac{1}{2} \times \frac{1}{2} \times \frac{1}{2} =\frac{1}{8}=\color{red}{Answer}\]
OpenStudy (mayankdevnani):
hope you understand. @surryyy
OpenStudy (surryyy):
yea i did the same thing. but i wasnt sure if i did it right or not.
OpenStudy (mayankdevnani):
you are correct :) i mean your answer is correct
OpenStudy (mayankdevnani):
good job :) @surryyy
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