is statement written in red also true ?? anyone

Question

Comments

the statement written in red is not true.

the statement circled red is true always.

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see :  this bro

A ⊂ B    ⇒    A  ⊆ B   always true  

so according to this in image  in red circle  A ⊂ B given so by this   A  ⊆ B  becomes true and so statement above red circle also hold as A  ⊆ B , therefore statement in red becomes true

 correct me if iam wrong

 

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No that implications is false

Answer 1

Here A= 1

B= 1,2

A $\subset$ B implies B' $\subset$ A'

B'=3 A'=2,3

But one in red is not possible, it can be true if A$\subseteq$B