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Maths-

General

Easy

Question

If $S$ is the set of squares and $R$ is the set of rectangles, then $open parentheses S union R close parentheses minus left parenthesis S intersection S right parenthesis$ is

(a) $S$
$R$
Set of squares but not rectangles
Set of rectangles but not squares

The correct answer is: Set of rectangles but not squares

Clearly, $S subset of R$
$therefore S union R equals R blank a n d blank S intersection R equals S$
$rightwards double arrow open parentheses S intersection R close parentheses minus open parentheses S intersection R close parentheses equals$ Set of rectangles which are not squares

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