2 years ago

Tim must choose 4 graphic novels out of a collection of 13 to take on vacation.

Mathematics

2 answers:

Vsevolod [243]2 years ago

7 0

$C(13,4)=\dfrac{13!}{4!9!}=\dfrac{10\cdot11\cdot12\cdot13}{2\cdot3\cdot4}=715$

Kay [80]2 years ago

7 0

there are 715 ways to choose (C, 715)

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