perplexus.info :: Probability : Flipping a coin

Flipping a coin (Posted on 2003-05-20)

Suppose you flip a coin three times.

What is the probability of getting exactly one heads?

See The Solution Submitted by Tim Axoy

Rating: 2.7647 (17 votes)

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Puzzle Solution

Comment 23 of 23 |

The 8 outcomes are recorded as follows:

HHH,HHT,HTH,HTT,THH,THT,TTH,TTT

Of these 8 outcomes, the ones with exactly one head is as follows:

HTT, THT, TTH

Thus,, the required probability is given by:

Favorible # outcomes/Total outcomes

=3/8

= 0.375

Posted by K Sengupta on 2023-09-09 00:07:36

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