| Manifesto | Bookstore | Contents | Amazon store | Term index | What changed? | Contact | Recommend |
Outline Mathematics
|
|
"So you've got five kids, with one girl in the middle," said Alan. "How old is she?" Clem smiled. "Figure it out yourself," he replied. "They're all spaced two years apart, and the youngest boy is just half as old as the oldest." How old was the girl? |
Copyright © 1996-2009 Alexander Bogomolny
Solution
|
"So you've got five kids, with one girl in the middle," said Alan. "How old is she?" Clem smiled. "Figure it out yourself," he replied. "They're all spaced two years apart, and the youngest boy is just half as old as the oldest." How old was the girl? |
(In the applet below, click on the underlined omitted expressions. See what happens.)
Do not forget to check your solution.
References
- J. A. H. Hunter, Entertaining Mathematical Teasers, Dover Publications, 1983
Copyright © 1996-2009 Alexander Bogomolny
| 34384495 |  |
