I am sorry, I have to make a correction on this opening mail;
There are 5 train stops and 2 passengers. What is propability that EITHER ONE DOES NOT get off
on first two stops ( stop 1 and stop 2 ) ?
- My solution is 1/5^2 + 1/5^2 = 2/25
And propability that both passengers DO NOT get off
on first three stops ( stop 1, stop 2, stop 3 ) ?
- My solution is 1/5^2 + 1/5^2 + 1/5^2 = 3/25
I don't know are my solutions correct?
"Does that mean that both do not get off at stop 1 and both do not get off at stop 2?" - YES
Propability that one can can get off on any stop is clearly 1/5.
And each of those two can get off on any stop he wants. 5 stops and two passengers, indeed.
First I thought 1/5^2 + 1/5^2
But now I think 1/5^2. But don't know...