All categories

3 years ago

How many ways are there to select 25 books from a collection of 27 books? i am just studying today

Mathematics

1 answer:

laiz [17]3 years ago

4 0

notice, this will just be a Permutation.

$\bf _nP_r=\cfrac{n!}{(n-r)!}\qquad \qquad \stackrel{\textit{25 books off a total of 27}}{_{27}P_{25}=\cfrac{27!}{(27-25)!}} \\\\\\ _{27}P_{25}=\cfrac{27!}{2!}\implies 5444434725209176080384000000$

you can always check your calculator also for a [ ₙPᵣ ] button.

You might be interested in

The graph on the right shows two cyclists' journeys.

aev [14]

Chai djdkkd flower dixie

3 0

3 years ago

How do the graphs of y =1/x and y = 3/x – 4 compare?

Pie

The graphs of y =1/x and y = 3/x – 4 can be compared by saying that c<span>ompared to the graph of y =1/x , the graph of y =3/x – 4 is a vertical stretch by a factor of 3 and a translation of 4 units down. This can be seen clearly when you graph the functions on a x-y coordinate plane.</span>

6 0

3 years ago

How does understanding the characteristics of public speaking affect how you view a speech?

umka2103 [35]

Answer:

I think its C

Step-by-step explanation:

By learning characteristics of a speech, It should be easier to determine the impact of a specific speech.

3 0

3 years ago

Read 2 more answers

Given that S is the midpoint of RT. and S(-4,-6) and T ( -7,-3) find the coordinates of R. only put the x and y value, ( x , y )

Viefleur [7K]

(-1, -9) go 3 to the right and three down from the midpoint <3 pls mark brainliest

5 0

3 years ago

Given the arithmetic sequence an = 4 − 3(n − 1), what is the domain for n? All integers where n ≥ 1 All integers where n > 1

krok68 [10]

All integers where n ≥ 1.

We have given that the sequence,

$a_{n} =4-3(n-1)$

We have to find the domain for n.

<h3>What is the meaning of arithmetic sequence?</h3>

Arithmetic sequence is a sequence of numbers such that the difference between the consecutive terms is constant. Difference here means the second minus the first.

That is, $a_{n} =a+(n-1)d$

where a = first term of sequence.

d =common difference.

n =number of terms which belongs to natural numbers

By the definition of arithmetic sequence n starts with 1

Remember that,the natural number starts with 1

Now, in given sequence for nth term

$a_{n} =4-3(n-1)$

The domain for n is All integers where n ≥ 1.

To learn more about the arithmetic sequence visit:

brainly.com/question/20118982

4 0

2 years ago