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Question Number 189701 by DAVONG last updated on 20/Mar/23

Commented by Rasheed.Sindhi last updated on 23/Mar/23

$16) 59 r e c t a n g l e s (i n c l u d i n g s q u a r e s)$ $h a v i n g s u m m u l t i p l e o f 5 .$ $I w i l l w r i t e d e t a i l e d s o l u t i o n i f y o u$ $g i v e s o m e r e s p o n s e .$
	Answered by Rasheed.Sindhi last updated on 21/Mar/23

	$17) Contradiction!$ $A s t h e t r i a n g l e i s r i g h t - a n g l e d$ $t h e l a r g e s t a n g l e i s 90 °$ $∙ \cos 90 = \frac{a + \sqrt{b}}{c} = 0$ $a + \sqrt{b} = 0$ $a = - \sqrt{b}$ $∵ b \in P$ $∴ a \notin Z$
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