Anyone want a girlfriend because I'm bi and I'm 12 bouts to be 13

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?

Indicate the formula for the following conditions: p^c(n,r)=

Find the solution(s) to x^2-14+49=0