1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
nydimaria [60]
2 years ago
13

In how many ways could 12 people be

Mathematics
1 answer:
laila [671]2 years ago
8 0

Step-by-step explanation:

There are total 12 People

Person 1, Person 2,3,4,5,6,7, 9, 10, 11 and 12 at a round table

12 Chairs: 1,2,3,4,5,6,7,8,9,10,11 and 12                                                                                

Let chairs 1 and 2 be next to each other

Person 1 is at chair 1 and Person 2 is at chair 2

The rest of the people on 3,4,5,6,7,8,9,10,11 and 12 - can sit in 10! ways

Next, Person 1 and Person 2 change their positions;

Person 1 is sitting at 2 and Person 2 is sitting at 1

The rest of the people on 3,4,5,6,7,8,9,10,11 and 12 - can be rearranged in 10! ways

Therefore, total number of ways in which Person 1 and Person 2 are next to each other is: 2*10! = 7257600

As we then have to find in how many ways they are not sitting next to each other; subtract 7257600 from the total number of possible arrangements.

In circular permutation,

Total number of arrangements of n people = (n-1)!

Here the number of people is 12

Arrangement = (12-1)! = 11!= 39916800

Therefore, the number of ways Person 1 and Person 2 are not next to each other = 39916800 - 7257600 = 2659200

<em>Keywords: </em><em>permutation, combination</em>

<em> Learn more about permutation and combination from brainly.com/question/12953847</em>

<em> #learnwithBrainly</em>

You might be interested in
Someone help pleaseeee
Aleks [24]

2a + 8a simplified is 10a

3 0
3 years ago
A triangle has an area of 72 and a base of 10 what is the height
Studentka2010 [4]
The height will be 14.4
5 0
3 years ago
Read 2 more answers
B. Use the number line to order 2, 2, 1.25, and -35<br> from least to greatest.
Naya [18.7K]

Answer:

-35, 1.25, 2, 2

Step-by-step explanation:

have a good day!

5 0
2 years ago
The rule (x, y)→(x−6, y−7) represents a translation 6 units _______ and 7 units________?
mestny [16]
6 units right and 7 units down

5 0
3 years ago
Read 2 more answers
Given: -8(x+1)=-5(x+10) prove x=14
Doss [256]

Answer:

isolate the variable by dividing each side by factors that dont contain the variable

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • Sadie has a blue ribbon and a red ribbon. The blue ribbon is 12 inches long. The blue ribbon is 3 times longer than the red ribb
    7·1 answer
  • Math question please help
    8·1 answer
  • Seriously someone help me i answered it but i don’t know if it is right so please tell me if it is and how i got the answer or p
    6·1 answer
  • Find the matrix that represents a rotation clockwise around origin followed by reflection about x
    13·1 answer
  • Y+y+y+3y<br>please help me​
    15·1 answer
  • How do you solve (x+11)^2=2
    12·1 answer
  • How to find the value of x in degrees HELP
    10·1 answer
  • Find the range of the function f(x) = 4x – 1 for the domain {-1, 0, 1, 2, 3}.
    15·2 answers
  • You move left 1 unit. You end at (1, 4). Where did you start?
    11·1 answer
  • Part E
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!