contestada

a coin operated machine sells plastic rings . it contains 6 yellow rings,11 blue rings,15 green rings,and 3 black rings.sarah puts a coin into the machine. find the theoretical probabilty the sarah gets a black ring, rounded to the nearest thousandth.

Respuesta :

mreijepatmat
sample space ={6y+11b+15g+3bk} = 35 elements
number of black rings=3
probability (black ring) =3/35=0.085