Respuesta :

there is a 1/2 probability of landing on heads each flip

he flips it 3 times

so 1/2 x 1/2 x 1/2 = 1/8 probability of getting heads every time.

[tex] |\Omega|=2^3=8\\
|A|=1\\\\
P(A)=\dfrac{1}{8}=12.5\% [/tex]