Respuesta :
[tex] |\Omega|=C(4,2)+C(5,4)+C(4,3)=\dfrac{4!}{2!2!}+\dfrac{5!}{4!}+\dfrac{4!}{3!}=6+5+4=15\\ |A|=3+2+2=7\\\\ P(A)=\dfrac{7}{15} [/tex]
Answer:
[tex] \frac{1}{30} [/tex]
Step-by-step explanation:
First we take the probability of the first one which is
[tex] \frac{1}{ \binom{4}{2} } [/tex]
which is equal to 1/6
times 2/5
times 1/2
which is equal to 1/30