Chance jokes

When a statistician passes the airport security check, they discover a bomb in his bag. He explains. "Statistics shows that the probability of a bomb being on an airplane is 1/1000. However, the chance that there are two bombs at one plane is 1/1000000. So, I am much safer..."

I picked up a hitchhiker last night.

He seemed surprised that I'd pick up a stranger and asked, "Thanks but why would you pick me up? How do you know I'm not a serial killer?"

I told him the chances of two serial killers being in one car would be astronomically low