A recent survey examined the use of social media platforms. Suppose the survey found that there is a 0.61 probability that a randomly selected person will use Facebook and a 0.28 probability that a randomly selected person will use LinkedIn. In addition, suppose there is a 0.26 probability that a randomly selected person will use both Facebook and LinkedIn.

(a)

What is the probability that a randomly selected person will use Facebook or LinkedIn?

(b)

What is the probability that a randomly selected person will not use either social media platform?