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(Section 3)You should recall how to find the union and intersection of sets of numbers.If X and Y are two given sets of numbers, then
For the discrete sets of numbers below you can use Venn diagrams. For the sets of numbers which are continuous you may wish to use number lines.Check Your Understanding: (Remember to write your answers down.)1.
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and is
called the INTERSECTION of X and Y;
and is
called the UNION of X and Y.
(5,10]
Rational Numbers =
=
=