Check whether the following pair of statements are negation of each other. Give reasons for your answer.
(i) x + y = y + x is true for every real numbers x and y
(ii) There exists real numbers x and y for which x + y = y + x
No Negation of
(i) is ‘there exists real number x and y for which x + y & y + x’, which is not same as (ii).
