A publishing company conducted a survey of its readership and found that 60%
Subscribed to Food & Wine, 30% subscribed to Wine Spectator, and 25% subscribed to
Both. The probability that a reader does not subscribe to either is
A) .10
B) .65
C) .50
D) .45
E) .35

Question

Quizplus · Accepted Answer

Using the principle of inclusion-exclusion, the probability that a reader subscribes to at least one magazine is 0.60 + 0.30 - 0.25 = 0.65. Therefore, the probability that a reader does not subscribe to either is 1 - 0.65 = 0.35.

A Publishing Company Conducted a Survey of Its Readership and Found