Answers:
(i)
The negation of the statement is:
It is false that “complex numbers are not a real number.”
[Or]
“All complex number are real numbers.”
(ii)
The negation of the statement is:
“I will go to school.”
(i) There is a complex number which is not a real number. (ii) I will not go to school.
(i) There is a complex number which is not a real number. (ii) I will not go to school.