N. Division by zero is not defined so 6.2 over 0 is an undefined expression.
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A pure imaginary number is a complex number that has 0 for its real part, such as 0+7i.
Yes, 0/3 is 0 which is a rational number
A complex number x+iy is non-real if x=0 like 0+i13
A real number is any number so yes it is always a real number * * * * * Except if the second number is 0, in which case the quotient is not defined.
It's any real number distinct from 0. For instance, in the expression x/y, where x and y are real numbers, y needs to be a nonzero real number. This is because otherwise the expression x/y is undefined (viz. x/0).