Actually, in his follow up sefer Misa'dah BeSof Ha'Olam Rav Adams finally reveals the question to the answer:
"What do you get when you multiply six by nine"
Chazal were mystified, since, as Rav Adams explained, the Question and the Answer seem mutually exclusive.
But 6x9=42 is true if you operate in base 13, which, as everyone knows, are the Middos of Hashem. 42 is also the gematria of Google, implying that it was an act of rachamim that Hashem bestowed Rav Google upon the world.
So what do 6 and 9 mean? According to the song, 6 are the books of Mishnah, and 9 are the months before a baby is born.
Ergo, we see that the question and answer is as follows:
Q: Why does the v'lad learn kol hatorah in the womb?
A: Because through the attribute of mercy, Hashem has bestowed Google upon us. Thus, he has us learn in the womb while we are incapable of using a smartphone to ensure that everyone receives some schar of talmud torah.