/\     /\
 /  \   /  \
/    \ /    \
|  0  |  00 |
+---+---+---+----+-----+
|r1 |b2 |r3 |    | low |
+---+---+---+    | 1 - |
|b4 |r5 |b6 | 1st| 18  |
+---+---+---+    +-----+
|r7 |b8 |r9 | doz|     |
+---+---+---+    | even|
|b10|b11|r12|    |     |
+---+---+---+----+-----+
|b13|r14|b15|    |     |
+---+---+---+    | red |
|r16|b17|r18| 2nd|     |
+---+---+---+    +-----+
|r19|b20|r21| doz|     |
+---+---+---+    |black|
|b22|r23|b24|    |     |
+---+---+---+----+-----+
|r25|b26|r27|    |     |
+---+---+---+    | odd |
|b28|b29|r30| 3rd|     |
+---+---+---+    +-----+
|b31|r32|b33| doz| high|
+---+---+---+    | 19- |
|r34|b35|r36|    | 36  |
+---+---+---+----+-----+
|1st|2nd|3rd|
|col|col|col|
+---+---+---+
Payoffs:
Straight up
One number bet. Pays 35 to 1.
Column
Twelve number bet. Covers the entire column of numbers. Pays 2 to 1
Dozen
Twelve number bet. Covers the entire dozen. Pays 2 to 1
Even-Money
Eighteen number bet. These are the bets on the far right of the diagram above: red/black, even/odd, high/low. Pays 1 to 1
Split
Two number bet. Placed on the border between two numbers. Pays 17 to 1
Trio
Three number bet. Placed on the left edge, covers all three numberson that row. Pays 11 to 1
Corner
Four number bet. Placed at the corner of four numbers, covering all of them. Pays 8 to 1
Five Number
Five number bet. Placed at the intersection of '0' and '1' on the left edge. This covers the numbers '1', '2', '3', '0' and '00'. Pays 6 to 1
Six Number
Six number bet. Placed on the left edge at the junction of two numbers. Covers all 6 numbers in both rows. Pays 5 to 1.

Systems of betting