Respuesta :
The probability that it won't happen is 5/8, I believe, you answered it already.
If the probability that an event will occur is 3/8, then to fin the probability that something will not occur we subtract as shown.
8/8 - 3/8 = 5/8
Answer: 5/8
8/8 - 3/8 = 5/8
Answer: 5/8