Rows of Apple Trees
Math brain teasers require computations to solve.
An apple farmer goes to the nursery to buy 10 apple trees. The owner says that if the farmer can plant the 10 trees in 5 rows of 4, he can have the trees for free. How does the farmer do it?
Answer
He places the trees in the shape of a 5 pointed star.
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Comments
trickster2005   
Sep 25, 2005
| awesome teaser I loved it. not extremely hard not extremely easy. perfect.   |
jntrcs
Apr 12, 2006
| WHAT??     |
stil
Apr 27, 2006
| Rows cross so each tree is in two rows. One tree is planted at each point (convex vertice) of star. One tree is planted at each crotch (concave vertice) of star. A row of 4 includes two trees at adjacent crotches and those on the points in line with them. |
Stormcrafter
Nov 12, 2006
| Very easy, but not a bad one. You need to mislead people, otherwise it becomes like "What is another name for the sun?" - it took me a whole five seconds, so really - mislead them to water  |
calmsavior
Jan 16, 2007
| awesome |
javaguru
Feb 08, 2009
| This is an old classic teaser, not an original. |
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