Two marks exercise problems III — task. Mathematics State Board, Class 9.

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Find

$A \cup B$ ,

$A \cap B$ ,

$A - B$ and

$B - A$ for the following sets.

(i)

$A = \{x: x \in N, x \le 10\}$ and

$B = \{x: x \in W, x < 6\}$

$A \cup B$

$=$

$A \cap B$

$=$

$A - B$

$=$

$B - A$

$=$

(ii)

$A =$ Set of all letters in the word “mathematics” and

$B =$ Set of all letters in the word “geometry”

$A \cup B$

$=$

$A \cap B$

$=$

$A - B$

$=$

$B - A$

$=$

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