Question

plz....try to solve the que no.4

Answer 1

Think,
A={1,2,3,4,}
B={1,2 ,3,4,5,6}
A-B={1,2,3,4}-{1,2,3,4,5,6}=0
A union B={1,2,3,4} union {1,2,3,4,5,6}={1,2,3,4,5,6}=B
A intersection B={1,2,3,4} intersection {1,2,3,4,5,6}={1,2,3,4}=A
so this is the answer hope its help ☺

Answer 2

Heya !!

Here's your answer..⤵
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1) A ⊂ B

 ⊂ => subset

It means all element of set A are in set B.

2) A - B

It means those element of set A which do not belongs to set B.


from condition (1) and (2) ..,

we get A - B = ∅

∅ = empty set

3) A ∪ B = B

∪ => union

As we know all element of A are in B.
.... ( from (1) )

so we get A ∪ B = B

4) A ∩ B = A

 ∩ = intersection

as from (3) A ∪ B = B, so the common element of set A and set B is set A.

Hence, A intersection B we get A.

so, from (1) (2) (3) and (4) it's proved that all four condition were equivalent.
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Hope it helps

Thanks :)