Depends how kind you are being.
If that wold be the cheshbon then milk may be assur to drink due to Rav H. Schachter's question. If we hold that cows are a miut hamutzuy to be treifa that means that 10% are treifos (in practice it is much more than that, but that is due to chumros) and therefore MORE than echad bishishim. You need to come on to other types of rov such as kol diporish and/or chazokos to drink milk.
The reshonim and poskim explain that that the reason why we drink milk is a a sefek sfeka and a chazaka deosi micoach rubbah. See Tos. chullin 11a.
The problem arises when the farmers make the cows treifa to treat bloat. This is why Rav Elyasiv held that cholov stam is cholov treifa.