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
Anon25 [30]
3 years ago
11

I really need help!!!

Mathematics
1 answer:
Zigmanuir [339]3 years ago
8 0

Answer:

Pr = 6.67\%

Step-by-step explanation:

Given

n = 10 i.e. 10 people

Required

Probability of being next to each other

First, we calculate the total possible arrangements (without any restriction)

Total = n!

Total = 10!

If the three are to be next to each other,

First, we arrange the three

r_1 = 3!

Now, the 3 will be seen as 1; so, we have a total of 8 people i.e. (1 + 7 others)

The arrangement is:

r_2 =8!

So, the total arrangement, when they have to be next to one another is:

r = r_1 * r_2

r = 3! * 8!

The probability is:

Pr = \frac{r}{n}

Pr = \frac{3! * 8!}{10!}

Expand

Pr = \frac{3*2*1 * 8!}{10*9*8!}

Pr = \frac{3*2*1}{10*9}

Pr = \frac{6}{90}

Pr = 0.0667

Express as percentage

Pr = 0.0667 * 100\%

Pr = 6.67\%

You might be interested in
Find the measure of angle y, 38,41,19
astra-53 [7]
If this is DMS then the answer is 38.68861111 degrees
8 0
2 years ago
Which lines are parallel
krek1111 [17]

Answer:Lines HF and DE

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
What is the Y intercept of a line that has a slope of 1/4 and passes through point 8,three
natali 33 [55]

Answer:5

Step-by-step explanation:

2+2=4+1=5

7 0
3 years ago
Please help 30 points will mark brainliest.
xenn [34]

Answer:

12(x-1)2-(3x-5^)2

Step-by-step explanation:

Apply the distributive property.


3 0
3 years ago
two telephone poles are 75 feet apart and the poles are 50 feet tall. What is the distance from the base of one pole to the top
AlekseyPX
What is the distance from the base of one pole to the top of the other pole? too the nearest feet. and how do you know?

4 0
3 years ago
Other questions:
  • Two pools are being drained. To start, the first pool had 3700 liters of water and the second pool had 4228 liters of water. Wat
    9·1 answer
  • Simplify<br> 8/48<br> 9/54<br> 7/24<br> 21/28<br> 4/6<br> 70/80<br> 6/24
    6·2 answers
  • A puzzle in the local newspaper lists the letters M, R, O, U, and H and asks readers if they can correctly unscramble the letter
    11·2 answers
  • the average monthly precipitation for dallas for oct, nov, and dec is 3.47 in. If 2.88 in. falls in oct and 3.13 in. falls in no
    11·1 answer
  • 4. Solve. x² – 81 = 0 (1 point) 0 –9 –9, 9 9
    13·2 answers
  • 1 point
    7·1 answer
  • 11) In a triangle, the ratio of the measures of three angles is 2:5:8. Find the measures of
    8·1 answer
  • Please Help me, im not smart ✨​
    7·2 answers
  • Calculate the angles of an isosceles triangle that<br>has sides of length 9 cm, 9 cm and 14 cm.​
    13·1 answer
  • What is the median for the data set? 15, 17, 8, 23, 14 <br>15 38.5 8 15.4
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!