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شائع Word Problems >

if nine coins are flipped, what is the probability of obtaining at least one head

الحلّ

i f nin e co in s a re ​ f l i pp e d, w ha t i s t h e p ro babi l i t y o f o b t ainin g a t l e a s t o n e h e a d

الحلّ

\frac{511}{512}

+1

عشري

0.998046875

خطوات الحلّ

Find the probability of no head:

\frac{1}{512}

Probability of obtaining at least 1 head

= 1 -

Probability of no head

= 1 - \frac{1}{512}

1 - \frac{1}{512} = \frac{511}{512}

= \frac{511}{512}

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