what is Marital numbers code in ActionScript 3

[kofa]

hi
what is Marital numbers and odd numbers code in ActionScript 3

Marital numbers is : 0 2 4 6 8 10 12 .....
odd numbers is : 1 3 5 7 9 11 13 ....

i want do this :

var i:Marital numbers = Math.randomRange(0,20)
var hdd numbers = Math.randomRange(0,20)