Una urna contiene 5 bolas rojas 6 verdes y 4 blancas si se saca una sola de ellas cuál es la probabilidad de que sea de color verde.

The main reason that you should secure loose objects in your car before you drive is that a. objects too close to the engine may be affected by the heat b. they are likely to get damaged moving around your car c. they may be thrown into a spot that disrupts your driving d. they will be more easily retrieved from a single storage location