Lmorris2822 Lmorris2822

10-08-2018
Mathematics

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A literature course you are taking requires that you read 4 books during the semester from a reading list of 15 books. How many different groups of 4 can you select to read?

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vilnius vilnius

10-08-2018

we have given that list of 15 books from that we need to choose 4 books.

we need to find how many different choices are made.

we know that formula is [tex] nCr_ [/tex].

where n is the number of books and r is number of books chosen.

[tex] 15C_{4}_ =(15*14*13*12)/(1*2*3*4)=1365 [/tex] choices can be made.

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