Untitled

                              REAL NUMBERS (R)
                                      |
                ------------------------------------------------
                |                                              |
        RATIONAL NUMBERS (Q)                          IRRATIONAL NUMBERS
                |                                              |
      -------------------------                      -------------------------
      |                       |                      |                       |
   INTEGERS (Z)         Fractions              √2, √3, π, e        (Non-terminating,
      |                                         etc.                 Non-repeating)
   ---------
   |       |
WHOLE (W)  Negative Integers
   |
NATURAL (N)