Question

State true or false with justification (if it is true, prove it. If it is false, give example)
If x ϵ A and A ϵ B, then x ϵ B
plz help it urgent.Also give the explanation​

Answer 1

Answer:

Yes , it  is true .

Explanation:

lets take two groups :

A = { x ,y , z }

and

B ={ A , B , C } ⇒ { { x , y , z } , B , C }

This means that , { x ,y ,z } ∈ B .

Hence , x ∈ B proved .