Just a little quickie recursive brain workout for starters:
1. The third sentence here is true.
2. This is the second sentence here.
3. The fourth sentence here is false.
4. The sixth sentence here is true.
5. The first sentence in this list is true.
6. The first and last word in this sentence is "the."
Is sentence #5 true or false???
Meanwhile, plenty of fun stuff at Sol's latest "Wild About Math" entry for the Equalis Community blog: