Mathematics, 25.04.2020 02:59 edog7755
A new employee checks the hats of 5 people at a restaurant, forgetting to put claim check numbers on the hats. When customers return for their hats, the checker gives them back hats chosen at random from the remaining hats. a) How many derangements of the hats are there
Answers: 1
![D_n = n!* [ 1 - 1/1! + 1 / 2! - 1 /3! + ...+ (-1)^n 1/n! ]](/tpl/images/0626/3933/c599b.png)
![D_5 = 5!* [ 1 - 1/1! + 1 / 2! - 1 /3! + 1 /4! - 1/5!]\\\\D_5 = 44 ways](/tpl/images/0626/3933/80216.png)
Another question on Mathematics
Mathematics, 21.06.2019 17:30
Is appreciated! graph the functions and approximate an x-value in which the exponential function surpasses the polynomial function. f(x) = 4^xg(x) = 4x^2options: x = -1x = 0x = 1x = 2
Answers: 1
Mathematics, 21.06.2019 19:30
Evaluate the expression for the given value of the variable. ∣-4b-8∣+∣-1-b^2 ∣+2b^3 ; b=-2
Answers: 2
Mathematics, 21.06.2019 21:40
The point a is at –2 and the point b is at 7. marissa would like to divide this line segment in a 4: 3 ratio, and she would like to use the formula x = (x2 – x1) + x1. what values should she substitute into the formula? a = a + b = x1 = x2 =
Answers: 2
Mathematics, 21.06.2019 22:20
Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g
Answers: 2
You know the right answer?
A new employee checks the hats of 5 people at a restaurant, forgetting to put claim check numbers on...
Questions
History, 24.02.2020 19:57
Chemistry, 24.02.2020 19:57
Mathematics, 24.02.2020 19:57
History, 24.02.2020 19:57
