infinites

absolute value symbol l l
First look at some small finite sets:
Let A={1,5,9}
B={U,V,W,X,Y,Z}
C={Barrak Obama, Joe Biden, Hillary Clinton}

Fill in the blanks with one of the symbols <,>,=

lAl lBl
lAl lCl
lAl lAl
lBl lCl

Describe how you decided the comparative sizes of A,B, and C.

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