In a recent survey of 705 teens, 300 said they have a sister

Last updated: 7/10/2022

In a recent survey of 705 teens, 300 said they have a sister and 383 teens have a brother. One-third of those teens with a sister also have a brother. What is the probability that a teen has a sister or brother? What is the probability that a teen has a sister or no siblings? What is the probability that a teen has a brother or no siblings?