Aptitude - Probability - Discussion

Discussion Forum : Probability - General Questions (Q.No. 5)

Probability

Three unbiased coins are tossed. What is the probability of getting at most two heads?

Answer: Option

Explanation:

Here S = {TTT, TTH, THT, HTT, THH, HTH, HHT, HHH}

Let E = event of getting at most two heads.

Then E = {TTT, TTH, THT, HTT, THH, HTH, HHT}.

P(E) =	n(E)	=	7	.
	n(S)		8

Discussion:

121 comments Page 10 of 13.

SHIVU said: 7 years ago

Thanks for your answer @Sundar.

Manisha Yadav said: 2 years ago

The right answer should be 3/8.

(15)

Praveen kumar said: 9 years ago

You are great, Thanks @Sundar.

Chinenye said: 9 years ago

Why count 0, 0 means nothing?

Tejeshwari said: 3 years ago

Thanks all for explaining it.

(2)

Megha said: 9 years ago

Thank you very much @Sundar.

Sridevi said: 7 years ago

Can anyone explain it to me?

Asef rafi said: 9 years ago

What is an unbiased coin?

Sowmya said: 1 year ago

The Answer should be 3/8.

(4)

Dinesh said: 1 decade ago

Got it murugesh
thanks..

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