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How many combinations of 4 books can you choose from 6 books?

1 Answer

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Answer:


\huge\boxed{\bf{^6C_4 = 10combinations}}

Explanation:

Given:-

  • 6books

To find:-

  • How many combinations of 4 books can you choose from 6 books?

Ans:-


\sf \to ^6C_4 = (6!)/(4!(6 - 4)!)


\sf \to ^6C_4 = (6!)/(4!2!)


\sf \to ^6C_4 = \frac{\cancel6^2*5*\cancel{4!}}{\cancel{4!}\cancel{2!}}


\sf \to ^6C_4 = 2*5


\sf \to ^6C_4 = 10combinations


\:


\huge\colorbox{blue}{BlackPain}

User Will Walsh
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