Live Intraday Trading - How important is a whole number as S/R ?

Look how important are whole numbers as a support or resistance area . Also , watch how I used it in my trade as a support area and for going LONG .

Points to be watched :
1.Trailing stop loss
2.Covering profit's at regular interval
3.Entry points
4.Exiting partials
5.How stock behaves near a resistance area
6.How resistance area is converted to support zone