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प्रश्न
Write negation of the following statements :
(a) The number 6 is an even number or the number 25 is a perfect square.
(b) If x ∈ A ∩ B , then x ∈ A and x ∈ B.
बेरीज
उत्तर
(a) The number 6 is not an even number and the number 25 is not a perfect square .
(b) If x ∈ A ∩ B , then x ∉ A or x ∉ B .
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