Trivia

Subject:
Re: Friday Puzzler -- Lighthouses

Sam Force
My thinking was at 120 seconds they would all be in the last second of being off. And at second 121 they would all turn on to start a new cycle. Might not be right but I think it is

© 1998 - 2017 by Ellis Walentine. All rights reserved.
No parts of this web site may be reproduced in any form or by
any means without the written permission of the publisher.

WOODCENTRAL, P.O. BOX 493, SPRINGTOWN, PA 18081