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  •  An Unbiased coin is tossed 4 times. What is the Probability of getting (i) 3 heads

 An Unbiased coin is tossed 4 times. What is the Probability of getting (i) 3 heads

Answers (4)

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Given that an unbiased coin is tossed 4 times.

find the probability of getting 3 head

solution:

total number of events = 2^4 =16

Number of ways of getting 3 heads = \frac{4!}{1! 3!} = 4

probability =4/16 =1/4

 

Posted by

Ramraj Saini

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Given that an unbiased coin is tossed 4 times.

 

find the probability of getting 3 head

 

solution:

 

total number of events =  =16

 

Number of ways of getting 3 heads = 

 

probability =4/16 =1/4

 

 

Posted by

Shruti

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4/16=1/4

Posted by

Syed Rahath uddin

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Since each of ht 4 flips has 2 possible outcomes (heads or tails), there are 24=1624=16 outcomes in the sample space. At least 3 heads means 3 or 4 heads.
(43)=4(43)=4 ways to get 3 heads. (44)=1(44)=1 way to get 4 heads and 4+116=5164+116=516.

Posted by

Shreya Arora

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