1.Set Theory
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ધારો કે  $A =\{ x \in R 😐 x +1|<2\}$ અને  $B=\{x \in R:|x-1| \geq 2\}$ તો નીયેના પૈકી કયું વિધાન સાચું નથી?

A

$A - B =(-1,1)$

B

$B - A = R -(-3,1)$

C

$A \cap B =(-3,-1]$

D

$A \cup B = R -[1,3)$

(JEE MAIN-2022)

Solution

$A : x \in(-3,1) \quad B : x \in(-\infty,-1] \cup[3, \infty)$

$B – A =(-\infty,-3] \cup[3, \infty)= R -(-3,3)$

Standard 11
Mathematics

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