vi

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Phổ biến Word Problems >

You are dealt one card from a standard 52-card deck. Find the probability of being dealt an ace or a 9. Enter your answer in a reduced fraction form.

Lời Giải

Y o u a re d e a lt o n e c a r d f ro m a s t an d a r d 52 - c a r d d ec k . F in d t h e p ro babi l i t y o f b e in g d e a lt an a ce or a 9. E n t er yo u r an s w er in a re d u ce d f r a c t i o n f or m .

Lời Giải

\frac{2}{13}

+1

Số thập phân

0.15384 \dots

Các bước giải pháp

Find the probability of being dealt an ace:

\frac{1}{13}

Find the probability of a 9;.:

\frac{1}{13}

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}{13} + \frac{1}{13}

\frac{1}{13} + \frac{1}{13} = \frac{2}{13}

= \frac{2}{13}

Ví dụ phổ biến

Thrice a number, decreased by 3, is the same as twice the number, increased by 7.the product of two consecutive even integers is 168 The chu vi of a circle is 12𝜋 centimeters. What is the diameter?The diện tích of a rectangular painting is 5247 cm^2. if the width of the painting is 53 centimeters, what is its length?2 times the sum of a number x and 1 is 48