C. given:
U=a b c d e f g
A=b d f g
B=a c d
is (A U B)=A' n B'? explain your answer.
explanation:
D.
In a survey of 80 mothers,48 use brand X detergent
and 24 use brand X and Y detergents.
How many mothers use brand Y detergent only?
Anyone, please? T^T
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