I am not sure about verbal, cause 42-44 is not extreme case and a lot of variations possible. Depending on the complexity of failed questions one needs to get right 32-36 questions (???)
For Math you can get anything from 46-58 with just one mistake. It depends how soon one failed to answer. The later you do that single mistake, the higher you score.
Just an idea: if one fails only 2nd questions it maybe 46-47, if only 15th about 50, if only 37th score is about 56-58