I'm posting one puzzle, riddle, math, or statistical problem a day. Try to answer each one and post your answers in the comments section. I'll post the answer the next day. Even if you have the same answer as someone else, feel free to put up your answer, too!
Tuesday, July 22, 2008
A Whole Range of Numbers
If you multiply me by 2, subtract 1, and read the reverse the result you'll find me. Which numbers can I be?