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31.01.2020 •
Mathematics
If i see 15 tan pupies and 8 white pupie how much more tan pupies did i see
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Ответ:
Ответ:
Ответ:
Probability = 0.6
Step-by-step explanation:
We are given that out of 6 employees, 3 have been with the company for five or more years which means remaining 3 employees have been with the company for less than 5 years.
We have to find the probability that If 4 employees are chosen randomly from the group of 6, what is the probability that exactly 2 will have five or more years seniority;
This means that 2 employees will be selected from the group of 3 employees who are with the company for five or more years and remaining 2 employees will be selected from the group of 3 employees who have been with the company for less than 5 years.
Number of ways in which exactly 2 will have five or more years seniority
=![^{3} C_2 * ^{3} C_2](/tpl/images/0523/3578/444bf.png)
Total number of ways for selecting 4 employees from group of 6 =![^{6} C_4](/tpl/images/0523/3578/94b05.png)
So, required probability =
=
{
}
=
=
= 0.6