en

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular Word Problems >

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

Solution

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

Solution

\frac{511}{512}

+1

Decimal

0.998046875

Solution steps

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}

Popular Examples

The sum of two numbers is 15 and their difference is 1.Express twice the sum of a number and 5 into symbol.a number x increased by 10 is greater than 65 if bob has 12 apples and give 2 to emma how much will he have The circumference of a circle is 12.56 meters. What is the circle's radius?