n “Cash Cab” update: Thanks to all who wrote (with obviously sharper eyesight than your humble trivia author), to let us know how “Cash Cab” driver/host Ben Bailey reads the questions while he keeps his eyes on the road. The answer? He doesn’t. He has an earphone in the ear that faces away from the camera, which feeds him the questions. More on the show in a future column.

What is typically added to bags of potato chips these days to increase their shelf life?

A) Nitrogen

B) Water

C) Sugar

D) Charcoal

Answer Monday.

Thursday’s answer: Words starting with the letter S take up about 11 percent of standard English dictionaries, whether they’re unabridged or college-size.