Riddle:
Mr. Brown was killed on Sunday after noon. The wife said she was reading a book. The butler said He was taking a shower. The chef said he was making breakfast. The maid said she was folding clothes, and the gardener said he was planting tomatoes. Who did it?
Answer: The chef killed Mr. Brown because he said he was cooking breakfast but it was a Sunday afternoon.
Riddle:
This number added to it's square, and the digits of that summation added together, bring it back to itself. What is it?
Answer: 3. 3 squared is 9. 3+9=12. Take the two digits of the summation and add them; 1+2=3. In short; 3-9-12-3. This can also work with the number 0 and 9.