Paper on the use of probability theory in finance?

I have taken probability theory course in college and want to see how it is used practically in finance.

What papers should I read? I want it to be not too difficult (undergraduate probability theory course level would be great)

$\,\,\,$Generally, Finance involve some degree of uncertainty, so we need to use probabilistic reasoning in order to make a sound decision. Nowadays, we need to apply modern probability in each part of finance and this issue is too widespread.However, I introduce some useful articles and books: