1. “Yes, they’re my three grandchildren,” said Don, slipping the photo back into his wallet. “Spaced one year apart, with the girl in the middle.”
Peter smiled. “Nice and close together. How old are they now?”
“That’s asking!” replied Don. “Brian’s the youngest. If you add his age to the square of Eve’s and to the cube of Bob’s age, you get the square of my age, and I’m in my seventies.”
How old are the grandchildren?
