=====> UPDATE <===== QUESTION #1. True or false: one of Max Born's grandchildren is much more famous than he is. I mean, incomparably more famous, leaves him in the dust and even more. ANSWER #1. True. Olivia Newton-John. See, e.g., http://www.onlyolivia.com/aboutonj/index.html UPDATE #1. My dear friend Michael Cwikel, who is Antoni Zygmund's mathematical grandson via Yoram Sagher, was Olivia Newton-John's schoolmate down under. See., e.g., http://www.math.technion.ac.il/people/mcwikel/ http://www.genealogy.math.ndsu.nodak.edu/html/id.phtml?id=6571 NOTE. "Variational Estimates for Discrete Schr\"odinger Operators with Potentials of Indefinite Sign" of Damanik-Hundertmark-Killip-Simon refers to both Cwikel and me so that I have a finite Olivia Newton-John number, and, therefore, Max Born's Erdos number is finite as well. See. e.g., http://citebase.eprints.org/cgi-bin/citations?id=oai:arXiv.org:math-ph/0211015 /PaulN (paul@nevai.us) P.S. Feel free to distribute this quiz as long as you leave the text intact. ################################ REFERENCES ################################# https://people.math.osu.edu/nevai.1/QUIZ/quiz.txt https://people.math.osu.edu/nevai.1/QUIZ/quiz_solution.txt https://people.math.osu.edu/nevai.1/QUIZ/quiz_update.txt #############################################################################