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If A=3n:nN,n6,B=9n:nN,n4 then which of the following is false

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a
AΔB={3,27,243,6561}
b
A~B={3,27,243}
c
A∩B={9,81,729}
d
A∪B={3,9,27,81,243,729,6561}

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detailed solution

Correct option is A

A={3,9,27,81,243,729},B={9,81,729,6561}A∪B={3,9,27,81,243,729,6561}A∩B={9,81,729}A~B={3,27,243}B~A={6561}AΔB=(A~B)∪(B~A)={3,27,243,6561}

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