Question

Answer the following questions :
1.
If n(A) = 12, n(B) = 9 and n An B) = 5, then find n( Au B)​

Answer 1

Answer:

Hence sum of no. of elements in A(n(A)) and no. of elements in B (n(B)) can be given as

n(A)+n(B)=n(AuB)+n(AnB)

Thus to find n(AnB)

n(AnB)=n(A)+n(B)-n(AuB)

=7+5-11

=12

Hence n(AnB)=1

Answer 2

Answer:

(AuB) = 1

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