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
aev [14]
3 years ago
9

Manuel has 6 CDs that he is going to give away. He lets his best friend choose 3 of the 6 CDs. How many different groups of 3 CD

s are possible?
Mathematics
1 answer:
levacccp [35]3 years ago
5 0

Answer:

20 groups

Step-by-step explanation:

The number of different groups possible to choose from would be the combination because order doesn't matter.

Ways of choosing r things from n total things in combination is given by:

nCr = \frac{n!}{(n-r)!*r!}

Where

n ! = n * (n-1) * (n-2) * ....

So here we use

n = 6

r = 3

substituting in formula we get:

nCr = \frac{n!}{(n-r)!*r!}\\6C3 = \frac{6!}{(6-3)!*3!}\\6C3=\frac{6*5*4*3!}{3!*3*2*1}\\6C3=5*4=20

So, 20 groups are possible

You might be interested in
A dog is standing 5ft from the base of a tree trying to catch a cat that is 16 ft up in the tree. What is the angle of elevation
evablogger [386]

Answer:

72.64°

Step-by-step explanation:

Tan θ 16/5

θ= tan-1 (16/5)

=72.64°

3 0
3 years ago
The sum of the square of a number and 34
Ne4ueva [31]
Written as an expression, the statement 'the sum of the square of a number and 34' would look like this:

n^{2} +34

Hope that helped! =)
5 0
3 years ago
Read 2 more answers
Convert the following fractions to decimals. 1/8 1/9 2/3 4/7 3/10 5/3 9/5 5/6
il63 [147K]

Answer:

1/8 = 0.125

1/9 = 0.1

2/3 = 0.6

4/7 = 0. 571428

3/10 = 0.3

5/3 = 1.6

9/5 = 1.8

5/6 = 0.83

8 0
3 years ago
U.S. city with a ZIP code containing the first 5 digits of pi, beginning with the 3
dlinn [17]
31415 = Savannah, Georgia
8 0
3 years ago
Read 2 more answers
How to solve 4x-3y=22,2x-y=10
Lady bird [3.3K]
Is that considered two equations?
4 0
3 years ago
Read 2 more answers
Other questions:
  • arcus had 8/9 of a pack of construction paper. he used 1/5 of the paper to make paper airplanes. what fraction of the original p
    13·1 answer
  • What is there length of the hypotenuse in a right angle triangle with a base of 7 and a height of 16? Round to the nearest hundr
    12·1 answer
  • The graph of f(x) was vertically translated down by a value of k to get the function g(x) = 5x + k. What is the value of k? −7 −
    9·1 answer
  • Solve for: <br> 3/8 + (-7/8)=
    12·2 answers
  • Teacher has 56 baseball cards and receives 12 new cards per month another teacher has 80 baseball cards and received 8 new card
    9·1 answer
  • (NEED HELP 100 POINTS IF ANSWERED) Fill in the blank
    12·2 answers
  • A card is picked at random
    5·1 answer
  • Please answer this correctly without making mistakes
    6·1 answer
  • Ms. B is making snickerdoodle cookies. Her recipe uses one and a half teaspoons of cinnamon to make two dozen cookies. If she ne
    12·1 answer
  • Solve for x<br>x = ? <br>Please hurry! I will give brainliest to correct answer!​
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!