There are only two states that the bulb can be in 1 it is still burning and 0 it is burnt out.

It starts at 1 and remains at 1 untill it burns out when it becomes 0, and then remains at 0.

So any sample path consists of a number of 1 followed by 0's. The number of 1's could be any number from zero to ten, as could the number of 0's (well 10 minus the number of 1's).

RonL