CARTOON RIDDLE NO FURTHER A MYSTERY

Q: I weaken all men for hours day after day. I teach you Unusual visions when you are absent. I acquire you by night, by working day get you back. None put up with to own me, but do from my deficiency. What am I?5. What two numbers create a a single-digit range whenever you multiply them but a two-digit number any time you add them collectively? E