Seudónimo Seudónimo
  • 22-10-2018
  • Mathematics
contestada

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

In how many ways can he select the graphic novels?

A. 28,561

B. 17,160

C. 715

D. 52

Respuesta :

konrad509
konrad509 konrad509
  • 22-10-2018

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

Answer Link
student32949
student32949 student32949
  • 22-10-2018

there are 715 ways to choose (C, 715)

Answer Link

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