From stmt1: p(W) intersection p(E) = 0
Hence, p(WUE) = p(W) + p(E)
From stmt2: p(W) - p(E) = 0.2
Even combining two statemement, we are not able to find out p(W) + p(E).
Thanks, this is what I did: from statement one we know that there are no even white balls, so if p(w) -p(e) = 0.2, then p(w) - 0 = 0.2 so p(wUe) = 0.2 I have assumed that there are balls of the three colors, thus necessarily leading stmt1 to conclude that there are no even white balls. Did I get it wrong because there might be no white balls at all ("either white, or red or blue")?