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Answer»

(i) A = { -5 , -4 , -3 , -2 , -2, 0, 1 , 2 , 3 , 4 , 5 }

Here x ∈ Z i.e, integers. Hence, we have ALSO TAKEN negative numbers.

(ii) B = { 1 , 2 , 3 , 4 , 5 }

Here, x ∈ N i.e, natural numbers which are positive WHOLE numbers starting from 1 . We know that 11/2 is 5.5 which is fractional. So we have to take the natural numbers which are smaller or EQUAL to 5.5.


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