If 1 in 5 vehicles are green, and I have 5 vehicles, what is the probability of me having a green vehicle?
1 Answer
Apr 25, 2016
In cases like this it is better to compute the chance that you have no green verhicle at all.
Explanation:
It's like throwing a five-sided dye.
The probability for your first vehicle to be not-green is
This goes for all five, so the total probability of all vehicles to be not-green (this is an AND-question, so you MULTIPLY):
So the probability of you having at least one green vehicle is: