Answer:
A = {RRR, LLL, SSS}
Step-by-step explanation:
We are going to observe the direction of three consecutive vehicles.
The outcomes that we have to list are those of the event A where all three vehicles go in the same direction, this can be said as "the three vehicles turn right, the three vehicles turn left or the three vehicles go straight".
If the three vehicles turn right, the outcome would be: RRR.
If the three of them turn left, it would be: LLL.
If the three of them go straight, it would be: SSS.
It is obvious that these are the only 3 possible outcomes and therefore:
A = {RRR, LLL, SSS}