If I put in two light bulbs in a light at the same time would they burn out at the same time?

I have a chandelier and I had three light bulbs in it. One was older and the other two were newer. I took one out ( i'm not sure which) and then a few months later one burned out. Could I have taken out a new one and the one that burnt out was old? Or do light bulbs burn out at different times even if they were put in at the same time?