Feeling bit sorry for myself here after an exam, will spare the details but simply put;
5 possible topics
3 questions
2 topics studied
* only need to answer 1 of the three questions!
So chance neither two studied topics turning up ? I'm fairly rubbish at probability but looks like
(3/5)*(2/4)*(1/3) = 9%
Any maths head care to confirm before i go get the vodka out of the fridge?
5 possible topics
3 questions
2 topics studied
* only need to answer 1 of the three questions!
So chance neither two studied topics turning up ? I'm fairly rubbish at probability but looks like
(3/5)*(2/4)*(1/3) = 9%
Any maths head care to confirm before i go get the vodka out of the fridge?
