Quiz April 20 2004. Sections 1.6,1.7,1.8,4.1,4.2. Quiz: Apr. 20 ’04: 3.30-3.45 pm. Set S1 is the set of all Irish citizens with blue eyes. Set S2 is the set of all Irish citizens with black hair. Set S3 is the set of all Irish citizens. |S1| = 1000, |S2|=3000, |S3|=10,000,
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a) Venn diagram
c) 1000+3000-200 = 3800
d) (1000-200) + (3000-200) = 3600
e) 10,000 – 1000 = 9000
f) 10,000 – 3800 = 6200
g) 10,000 – 200 = 9800
h) one-to-one: yes. (every member of S3 gets only one incoming arrow)
onto: no. (Not all Irish citizens are reached by the mapping.
one-to-one correspondence: no (not onto).