How many methods in repository 150 did not have a comment and a summary?
methods refers to Name; repository that did not have a comment and a summary refers to FullComment IS NULL AND Summary IS NULL;
SELECT COUNT(T2.SolutionId) FROM Solution AS T1 INNER JOIN Method AS T2 ON T1.Id = T2.SolutionId WHERE T1.RepoId = 150 AND T2.FullComment IS NULL AND T2.Summary IS NULL