counting: 1, 2, 3, 4, ...

Question

whole: 0, 1, 2, 3, 4, ...

integers: ... , -3, -2, -1, 0, 1, 2, 3, ...

rational: all numbers that can be written as a ratio of integers

irrational: all numbers that cannot be written as a ratio of integers

real: all the numbers listed above

Answer 1

complex: numbers of the form a + bi, where a and b are real numbers, and i is the imaginary unit (i.e., the square root of -1)