SOLUTION: Evaluate (b) C6, 4. (c) P7, 7. (d) C8, 8.

Algebra ->  Probability-and-statistics -> SOLUTION: Evaluate (b) C6, 4. (c) P7, 7. (d) C8, 8.       Log On


   

Question 1126365: Evaluate
(b) C6, 4.


(c) P7, 7.


(d) C8, 8.

Found 2 solutions by MathLover1, ikleyn:
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

if you have combinations and permutations, then
(b) C6, 4.
6C4=+%286%21%29%2F%282%21+4%21%29=15
(c) P7, 7.
7P7=%287%21%29%2F%28%287+-+7%29%21%29=5040
(d) C8, 8.

8C8=%288%21%29%2F%280%21+8%21%29=1

Answer by ikleyn(52884) About Me  (Show Source):
You can put this solution on YOUR website!
.

Asking questions like these, you will never learn the subject.


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


On Permutations,  see the lessons
    - Introduction to Permutations
    - PROOF of the formula on the number of Permutations
    - Problems on Permutations


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".


Save the link to this textbook together with its description

Free of charge online textbook in ALGEBRA-II
https://www.algebra.com/algebra/homework/complex/ALGEBRA-II-YOUR-ONLINE-TEXTBOOK.lesson

into your archive and use when it is needed.