Roulette tables have two betting areas. The inside betting area contains the individual numbers on the layout. The outside betting area has boxes for the columns, red/black and odd/even and different groups of numbers.

You can't combine your inside and outside bets to meet the table minimum. If the minimum bet is five dollars you have to bet $5 on the inside and $5 on the outside. You can't bet $3 inside and $2 outside. For more on Roulette read Roulette 101.