Answer with Step-by-step explanation:
We are given that A, B and C are subsets of universal set U.
We have to prove that

Proof:
Let x
Then
and 
When
then
but 
Therefore,
but 
Hence, it is true.
Conversely , Let
but 
Then
and
When
then 
Therefor,
Hence, the statement is true.
380
3 hundreds 8 tens
2 hundreds 18 tens
1 hundred 28 tens
0 hundred 38 tens
Answer:
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Step-by-step explanation: