SOLUTION: In how many ways can a sample (without replacement) of 4 items be selected from a population of 15 items?

Algebra.Com
Question 1083970: In how many ways can a sample (without replacement) of 4 items be selected from a population of 15 items?
Answer by ikleyn(52798)   (Show Source): You can put this solution on YOUR website!
.
 =  =  =  = 1365 ways.


 =  is the number of combinations of n items taken "k" at a time.

On combinations, read the lessons
    - Introduction to Combinations
    - PROOF of the formula on the number of Combinations
    - Problems on Combinations
in this site.

Also, you have this free of charge online textbook in ALGEBRA-II in this site
    - ALGEBRA-II - YOUR ONLINE TEXTBOOK.

The referred lessons are the part of this online textbook under the topic "Combinatorics: Combinations and permutations".



RELATED QUESTIONS

In how many ways can a sample (without replacement) of 4 items be selected from a... (answered by jim_thompson5910)
In how many ways can a sample (without replacement) of 8 items be selected from a... (answered by ikleyn)
A population consists of 15 items, 10 of which are acceptable. In a sample of 4 items,... (answered by stanbon)
A population consists of 15 items, 10 of which are acceptable. In a sample of 4 items,... (answered by stanbon)
A population consists of 15 items, 10 of which are acceptable. In a sample of four... (answered by Fombitz)
In hw many ways can three items be selected from a group of six items. Use letters A B C... (answered by Edwin McCravy,math_tutor2020)
How many ways can three items be selected from a group of six items? Use the letters... (answered by stanbon)
Order matters; how many ways can 6 items be taken from a group of... (answered by edjones)
How many ways can three items be selected from a group of six items? Use the letters... (answered by richard1234)