he

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

פּוֹפּוּלָרִי Word Problems >

1 point(s):possible:You randomly select one card from a 52-card deck.:Find the probability of selecting a red ace.

פתרון

1 p o in t (s) : p oss ib l e : Y o u r an d o m l y se l ec t o n e c a r d f ro m a 52 - c a r d d ec k . : F in d t h e p ro babi l i t y o f se l ec t in g a re d a ce .

פתרון

\frac{1}{26}

+1

עשרוני

0.03846 \dots

צעדי פתרון

Find the probability of getting red:

\frac{1}{2}

Find the probability of getting ace:

\frac{1}{13}

Since the events are independent, Use the formula

P (X_{1} \land X_{2} \land \dots \land X_{k}) = P (X_{1}) \cdot P (X_{2}) \cdot \dots \cdot P (X_{k})

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

\frac{1}{2} \cdot \frac{1}{13} = \frac{1}{26}

= \frac{1}{26}

דוגמאות פופולריות

Find the present value of 25000 due 11 years later at 6.2%, compounded continuously.What will be the area of a square plot of land with a perimeter of 96 metres?One-third of a number, decreases by its reciprocal is equal to eleven divided by that number. What is the number?twice a number is 60 more than five times the number 6 years ago, Adriana won some money in the lottery and put it in a bank account that earns 10% interest compounded annually. If Adriana currently has 400.00 in the bank account, how much interest has she earned?