Respuesta :

Answer:

1/3

Step-by-step explanation:

21.

Probability of an even happening is equal to the number of desired outcomes divided by the total number of outcomes.

The desired outcomes here are 3 and 9. There are two desired outcomes.

The total number of outcomes is 6.

p(event) = (number of desired outcomes)/(total number of outcomes)

p(3 or 9) = 2/6 = 1/3