Symbols For Types Of Numbers

Question 1

What does a N mean?

Answer 1

Natural number (positive integer/ integer above 0)

Question 2

What does R mean?

Answer 2

Real number

Any non imaginary number

Question 3

What does z mean

Answer 3

Z any integer number

Question 4

What is z^+

Answer 4

Any positive integer

Question 5

What is z^-

0

Answer 5

Any negative integer or 0

Question 6

What does Q mean

Answer 6

Q is any rational number