SOLUTION: To choose 6 different numbers from 10 numbers (0-9), how many combinations are there?

Question 1175243: To choose 6 different numbers from 10 numbers (0-9), how many combinations are there?
Found 2 solutions by ewatrrr, ikleyn:
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!

Hi choose 6 different numbers from 10 numbers (0-9), how many combinations are there? 10C6 nCr = (n!)/(r!(n - r)!). Wish You the Best in your Studies.

Answer by ikleyn(52778)   (Show Source): You can put this solution on YOUR website!
.

The number of combinations is    = = 210.         ANSWER

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On Combinations, see introductory lessons
    - Introduction to Combinations
    - PROOF of the formula on the number of Combinations
    - Problems on Combinations
    - OVERVIEW of lessons on Permutations and 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".

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.

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The answer by @ewatrrr is INCORRECT.

Just for a long time she can not learn the difference between the combinations and permutations.

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