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Practice By Tag: The Principle of Inclusion and Exclusion

Question: 2017 Fall Final - 6

1 . Consider a group of 100 students. In this group,

13 students like Donald Trump,
25 students like Justin Bieber, and
8 students like Donald Trump and like Justin Bieber.

How many students do not like Donald Trump and do not like Justin Bieber?

(a)

72

(b)

69

(c)

71

(d)

70