Wait, thats not fair!

Probability Level pending

You have an unfair coin and you toss it three times.

2 3 \frac{2}{3} of the time it lands on heads.

What is the probability it will land on heads all three times?


The answer is 0.296.

David Pilling by David Pilling , 18, USA

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2 solutions

Finn C
May 22, 2016

2 3 \frac{2}{3} x 2 3 \frac{2}{3} x 2 3 \frac{2}{3}

= 4 9 \frac{4}{9} x 2 3 \frac{2}{3}

= 8 27 \frac{8}{27}

= 0.296 recurring

Note : This is kind of random, but are you (David Piling) related to Geoff Piling?

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Yes I am related to him.

David Pilling - 5 years ago

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Haha... just checking

Finn C - 5 years ago
David Pilling
May 20, 2016

the answer is ( 2 3 ) 3 = 0.296 (\frac{2}{3})^3 = \boxed{0.296}

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