Question

in U-11,2,3, 4, 5, 6, 7, 8, 9). A-(1,2,3,4} and B - (3, 4, 5, 6, 7). find
(A) AUB
(B) (AUB)
(11) If P and Q are two sets such that n(P) - 12, n(Q-P) - 7, then which anong the
following is the value of n(
PO)?
1
(A) 12
(B) 7
(C) 19
(D) 5​

Answer 1

Answer:

AUB={1,23,4,5,6,7}

n(P-Q)= 19-12= 5