http://www.ilient.com/Sysforums/posts/list/59.page JForum - http://www.jforum.net
This month we added a new item to the newsletter: [url=http://www.ilient.com/newsletter-35.htm#7]a riddle[/url] . This item was designed to add a bit of fun and challenge to your day. I hope that you enjoy it and if you have any riddles of your own, we'd be happy to hear them! Let the games begin!
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Here is an interesting one.

Draw a picture of how you would plant 12 trees in 6 rows with 4 trees in each row.

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A disgruntled jailer in a circular prison with 100 cells decides to free some prisoners. At night, he runs around the prison and turns the keys in the prison doors while the prisoners are sleeping. The first time around, he turns the key in each door, unlocking them all. The second time around, he turns the key in every other door, locking half of the ones he just unlocked. The third time around, he turns the key in every third door unlocking some and locking others. He goes around the prison 100 times and collapses as the sun rises. How many prisoners find their cells unlocked in the morning?]]> http://www.ilient.com/Sysforums/posts/preList/3474/15976.page http://www.ilient.com/Sysforums/posts/preList/3474/15976.page GMT http://www.ilient.com/Sysforums/posts/preList/3474/16206.page http://www.ilient.com/Sysforums/posts/preList/3474/16206.page GMT
I got the answer. It was a big number which I know you don't want me to publish here!!!]]> http://www.ilient.com/Sysforums/posts/preList/3474/16214.page http://www.ilient.com/Sysforums/posts/preList/3474/16214.page GMT
imagine an empty elevator on the ground floor.
6 mathematicians are walking in and heading for the second floor.
on the second floor 9 mathematicians are leaving the elevator.
how many mathematicians have to enter the elevator on the third floor so that the elevator is empty?

The answer seems to be simple, but try to visualize this

best regards]]> http://www.ilient.com/Sysforums/posts/preList/3474/16220.page http://www.ilient.com/Sysforums/posts/preList/3474/16220.page GMT