Consider the sets below.
u = {x|x is a real number}
a= {x | x is an odd integer}
r = {x | x = 3, 7, 11, 27}
is rca?

make sure you have version 2.50

try looking in the very back of the book : )

step-by-step explanation:

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no because after the troops were pulled many blacks were killed by hangings lynchings and other cruel ways which in a way interrupted the reconstruction of the south and differed from the way abraham lincoln had an idea of reconstruction