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 If A=[3,7] and B=[2,9] then which of the following is not true

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By Expert Faculty of Sri Chaitanya
a
A∩B=[2,7]
b
(A∪B)′=(−∞,−3)∪(9,∞)
c
A−B=[−3,2]
d
A−B′=[2,7]

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detailed solution

Correct option is C

From diagram A∩B=[2,7] (A∪B)′=(−∞,−3)∪(9,∞)A−B=[−3,2)A−B′=[2,7] where B′=(−∞,2)∪(9,∞)


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