ar

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

شائع Word Problems >

What is the probability of a die showing a 2 or a 5

الحلّ

Wha t i s t h e p ro babi l i t y o f a d i e s h o w in g a 2 or a 5

الحلّ

\frac{1}{3}

+1

عشري

0.33333 \dots

خطوات الحلّ

Find the probability of a die showing a 2:

\frac{1}{6}

Find the probability of a 5:

\frac{1}{6}

Since the events are disjoint, Use the formula

P (X_{1} \lor X_{2} \lor \dots \lor X_{k}) = P (X_{1}) + P (X_{2}) + \dots + P (X_{k})

= \frac{1}{6} + \frac{1}{6}

\frac{1}{6} + \frac{1}{6} = \frac{1}{3}

= \frac{1}{3}

أمثلة شائعة

The circumference of a circle is 100.53 feet. What is the circle's area?Miranda puts 1,000.00 into an account to use for school expenses. The account earns 8% interest, compounded monthly. How much will be in the account after 8 years?The product of two consecutive negative even integers is 80. Find the value of the lesser integer.Julia went shopping for a new pair of pants because of a sale. The store was offering a 35% discount. If the price on the tag was 41, what would be the price after the discount but before tax, to the nearest dollar and cent?Two buses leave towns 1365 kilometers apart at the same time and travel toward each other. One bus travels 17km per hour slower than the other. If they meet in 7 hours, what is the rate of each bus?