Question
How many 4-combinations of the set A=(1,2,3,4,5,6,7,8,9,0) contain 2 and 0?
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Answer to a math question How many 4-combinations of the set A=(1,2,3,4,5,6,7,8,9,0) contain 2 and 0?
Frederik
4.6101 Answers
To find the number of 4-combinations of the set A=(1,2,3,4,5,6,7,8,9,0) that contain both 2 and 0, we can use the combination formula.
The set A contains 10 elements. We need to choose 2 elements from the remaining 8 elements to complete the 4-combination.
So, the number of ways to choose 2 elements from 8 is given by:2\cdot\binom{8}{2}=56 2*6*56=672
\textbf{Answer:}\boxed{672}
The set A contains 10 elements. We need to choose 2 elements from the remaining 8 elements to complete the 4-combination.
So, the number of ways to choose 2 elements from 8 is given by:
\textbf{Answer:}
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