60-Second Brain Teasers Pencil-Free Puzzles Short Head-Scratchers from the Easy to Near Impossible

• A car dealer spend $20,000 for some used cars. He sold them for $27,500, making an average of $1,500 on each car. How many cars did he sell?
• A single-elimination billiards tournament is held for 100 players. How many matches must be held before a winner is crowned?
• If each of Peter's sons has twice as many sisters as brothers and each of his daughters has just as many sisters as brothers, how many sons and daughters does Peter have?
• If Beth is as old as Bill will be when Trish is as old as Beth is now, who is the oldest?

Nathan Haselbauer was the president and founder of the International High IQ Society as well as the chairman of the International Intelligence Testing Committee. His Test for Exceptional Intelligence was one of the most difficult and popular high ceiling intelligence tests available. 

The New copy of this book will include any supplemental materials advertised. Please check the title of the book to determine if it should include any access cards, study guides, lab manuals, CDs, etc.

The Used, Rental and eBook copies of this book are not guaranteed to include any supplemental materials. Typically, only the book itself is included. This is true even if the title states it includes any access cards, study guides, lab manuals, CDs, etc.