asked 64.8k views
21 votes
Con 12 libros de diferentes autores cuanto selecciones de 7 libros se pueden hacer si

a)un libro determinado se incluye siempre
b) in libro determinado nunca se incluye



1 Answer

3 votes

Answer:

b

Step-by-step explanation:

i hope this helped have a good night

answered
User Michael SM
by
8.1k points
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