What is the world’s only national capital that borders two other countries?

How to win: Send your answer, with your full name and address, either by e-mail to [email protected], or on a postcard to Stan Newman’s Trivia Challenge No. 86, P.O. Box 69, Massapequa Park, NY 11762. Only one submission per person, please. Answers must be received within seven days of publication. One winner will be chosen at random from all correct entries, who will receive a copy of Stan’s new book “15,003 Answers: The Ultimate Trivia Encyclopedia,” courtesy of Random House. Answer and winner will be announced in a future issue.

Answer Trivia Contest No. 79

Marlon Brando is a “direct link” between Charlie Chaplin and Charlie Sheen, having appeared in “A Countess from Hong Kong” (1967) with Chaplin, and “Free Money” (1998) with Sheen. Winner: Ryan Sherman of Everett, Wash.