Question

If A is any set and B is non-empty set and A is
subset of B. If n(B) = 9 then maximum possible
value of n(A A B) is
(1) 9
(2) 8
(3) Zero
(4) 6​

Answer 1

Answer:

given A is a (subset ) of B , and n(B)=9

formula :- A delta B = n(A - B) union n( B - A)

= n( empty set) union n( 9 )

= 9

Answer 2

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