ineedtopass19 ineedtopass19

09-06-2017
Mathematics

contestada

What is the number of combinations of 7 things taken 3 at a time?

A. 21
B. 35
C. 210
D. 343

Respuesta :

konrad509 konrad509

09-06-2017

[tex]C_7^3=\dfrac{7!}{3!4!}=\dfrac{5\cdot6\cdot7}{2\cdot3}=35[/tex]

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noauura noauura

31-03-2022

answer: b. 35 (plato/edmentum)

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