check the pictures
26.
-11 points HunterDM3 2.5.026.
Let FCN be the set of all factors of 210. In the poset (F. 1), find the following.
(a) 42 A 10, the meet of 42 and 10
(b)
15 v 6, join of 15 and 6
(c)
745
(d)
7 V 5
(e) -42, the complement of 42
8.
+ -/1 points HunterDM3 2.2.011.
My Notes
+ Ask Your Teacher
In a class of 30 students, everyone has either a pierced nose or a pierced ear. The professor asks everyone with a pierced nose to raise his or her hand. Eight hands go
up. Then the professor asked everyone with a pierced ear to do likewise. This time there are 24 hands raised. How many students have piercings both on their ears and
their noses?
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